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太平洋家居网ios11显示系统显示5.27GB，占内存超厉害，怎么解决_百度知道
ios11显示系统显示5.27GB，占内存超厉害，怎么解决
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我们会通过消息、邮箱等方式尽快将举报结果通知您。Dell U2713H on Mac: forcing RGB mode instead of YCbCr
Attached files:
(2.11 KB, 62657 downloads)
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*UPDATE*: see here for a universal fix that works for all monitors:
Many Dell monitors (e.g., U2713H, U2713HM, ...) look really bad when
connected to a Mac (OS X 10.8.2) via DisplayPort, as if some sharpening
or contrast enhancement was applied. Others have reported the same
). The reason is
that the DisplayPort uses YCbCr colors instead of RGB to drive the
display, which limits the range of colors and apparently causes the
display to apply some undesired post processing.
The problem can be solved by overriding the EDID data of the display
order to tell OS X that the display only supports RGB. This can be done
by reading the EDID with &ioreg -l&, modifying the offending bits (see
the specification in the Wikipedia article), and creating a display
config override file for OS X. I have attached such a file for the
U2713H and U2713HM; just extract it and move the contained folder into
/System/Library/Displays/Overrides. After a reboot, the monitor should
show that RGB colors are used. For other monitors with the same problem,
the files won't work, but in principle the solution is the same.
Changes to the EDID that were made:
- color support: RGB only
- removed CEA extension block ( disables audio
via Displayport)
- fixed checksum
Tools used:
- text editor
- calculator
- edid-decode ()
- XCode plist editor
UPDATE: attached file contains fix for U2713HM as well.
Rate this post
Andreas, thanks again for assisting with this same process on the
u2713HM. Works great.
Rate this post
Hi Andreas, could you upload the file for the HM version as well?
Rate this post
Rate this post
Is there any chance you could walk me through this process or upload an
appropriate file for a Dell U3011?
Having the exact same problem, and it's been a real nightmare. Would be
eternally greatful!
I'm trying to figure it out on my own but I'm not sure where to look
within the output from ioreg -l -w -0 & ioreg.txt
Thanks in advance for any help, appreciate it.
Attached files:
(2.58 KB, 3154 downloads)
Rate this post
Wow, you're a champion for doing this. I've been sporadically trying to
solve this for almost 2 years!
I managed to work as far as I could by replicating what I imagined your
steps are – I got everything else figured out except the &data&&/data&
My monitor is a Dell 2709W, and my ioreg -l is attached to this post as
a .txt file. If you could take a look I'd really appreciate it – or let
me know how you calculated the &data&&/data& tag contents so I can do it
Thanks again, really appreciated.
Attached files:
(2.25 KB, 3215 downloads)
Rate this post
I kind of hacked my way around and got my Dell U3011 to properly display
RGB over a mini display port to display port cable! WOOHOO! no need for
that stupid $150 dual link dvi to mini displayport adapter anymore,
which was incredibly flakey and sometimes the monitor turned on, and
sometimes it didn't etc... lots of problems.
but anyways, heres the fix, i've attached a file you unzip into:
/System/Library/Displays/Overrides
It will create a new directory called:
/System/Library/Displays/Overrides/DisplayVendorID-10ac
Then reboot the system, and it should work. Go to system preferences,
displays, color, and set the display profile to Color LCD.
This will ONLY work for the Dell u3011 and it is completely UNTESTED.
Use at your OWN RISK. But you should have proper RGB colors after doing
Good luck!
Rate this post
Hi, Andreas,
Could you please help me to solve this problem for dell u2711 ?
Thank you very much
Attached files:
(1.56 KB, 143407 downloads)
Rate this post
Try running the attached script. Open Terminal and enter &ruby
patch-edid.rb&. This should give you an override file for your display.
Rate this post
Hi Andreas,
Many, many thanks for the script. Like Alex I have been struggling with
this problem ever since I got tried to use a mini-DP to DP cable to
connect a Thunderbolt MBP to a U2410 monitor (about 2 years ago!). The
script works fantastically for me.
Interestingly, the same monitor works fine with my original unibody MB
(i.e. a true mini-DP port), and also works great with my new laptop in
Windows, so I guess there's a bug in OS X somewhere in relation to
Thunderbolt and these monitors.
Thanks again!
Rate this post
yes, I made the same experience.
It is a Thunderbolt problem and OS X.
That's really a bad bug from Apple. I hope they fix it with 10.8.3.
Attached files:
96.3 KB, 24094 downloads
Rate this post
Dear Andreas,
There is some problems with run of this script. Probably i am quite
stupid and did something wrong. Could you please help me with this. I
attached terminal screen.
Rate this post
You need to run the script while (only) the external display is
connected.
Rate this post
Dear Andreas,
I have tryed all ways to switch off my macbook display and run this
script with only external display connected: switch it to sleeping mode,
than to wake it up with keyboard, but still the terminal command to run
the script doesn't work :(
Probably I am doing something wrong with typing in terminal window.
Should i put this script file in some specific folder?
I will be very appreciate to you if you could help to fix it in &ioreg
+-o AppleDisplay &class AppleDisplay, id 0x1000003be, re$
| | | | | | {
| | | | | | &IOClass& = &AppleDisplay&
| | | | | | &CFBundleIdentifier& = &com.apple.iokit.IOGraphicsF$
| | | | | | &IOProviderClass& = &IODisplayConnect&
| | | | | | &DisplayProductID& = 41047
| | | | | | &IODisplayEDID& = &00ffffffffffffc353930$
| | | | | | &IODisplayPrefsKey& = &IOService:/AppleACPIPlatform$
| | | | | | &IOPowerManagement& = {&MaxPowerState&=3,&CurrentPo$
| | | | | | &IOProbeScore& = 2000
| | | | | | &IODisplayParameters& = {&bgsc&={&min&=0,&max&=6553$
| | | | | | &IOMatchCategory& = &IODefaultMatchCategory&
| | | | | | &AppleDisplayType& = 2
| | | | | | &IODisplayAttributes& = &00$
| | | | | | &AppleSense& = 37119
| | | | | | &IODisplayConnectFlags& = &c4410000&
| | | | | | &DisplayVendorID& = 4268
| | | | | | &DisplaySerialNumber& =
| | | | | | }
Rate this post
Hi Andreas,
Thanks for the RGB fix. I'm using the Dell U2713H on a new iMac.
Unfortunately there is a very serious problem with this display and I
was wondering if you know if that's coming from Apple too:
After Hardware Calibration of the display (or using any other color
profile besides &Standard&) there is heavy green ghosting when I drag a
window around. It is truly horrible.
Do you know if this is also connected to some Apple to Dell problem and
how can it be fixed?
Rate this post
I have Dell U2713H, and 15& rMBP and I filed a support ticket with Apple
and they sent me a program called TimingSnoop to collect diagnostic
output. That program seems to collect all EDID information, driver
details and pretty much all display information. I sent them back the
output but haven't heard back from them after that.
Forcing RGB seems to make some improvement, but the display is still
There is still some ghosting/fuzzy behavior and it does look
like some sort of timing/refresh issue. Prior to forcing RGB, I was
reducing the sharpness levels on the monitor all the way to zero and it
seemed to make similar improvement.
Rate this post
When in RGB mode, set sharpness to 50, this seems to disable any
processing. Otherwise the image is blurred or sharpened.
Rate this post
I just got the Dell U2713H monitor. I connected it with a macbook air
mid 2011 model (Thunderbolt minidp) using a mini dp to mini dp cable.
I didn't have the YcBcR issue, although OSX system profile reports the
monitor as &television&.
The colors are fine and the Monitor color mode is in RGB as expected
The problem I have is a strange ghosting (probably an RTC overshoot
issue) when moving windows or scrolling text!
I see Sebastian and Kr have also this specific problem, did you have any
news from Dell or Apple support?
I have tried the EDID override thing but it doesn't seem to correct the
&ghosting& issue. I have also tried connecting with several other dp
cables but the issue is still there.
Has anyone tested this particular monitor with a standard DVI-D PC ?
This is the only test I have not done yet.
Rate this post
@andreas, yes I have already set the sharpness to 50 without which the
display is unbearable but even with this workaround I still think that
there is some ghosting/clarity issue.
Apple closed my support ticket as a duplicate of another ticket and
Unfortunately I'm not able to see the details in the other ticket.
I also want to test the display with a dual-link DVI connector but
havent had a chance to do it and Dual Link DVI adapters are expensive
Rate this post
Well a pc with a good VGA card should be capable for a dual link DVI, no
extra adapter needed. I am waiting for my alienware to arrive. I should
do the test soon.
Meanwhile what i have noticed is that dropping the contrast from the
default 50 to 40 or 39 almost makes the ghosting go...
I am thinking if i have to live with that or return the monitor :(
Rate this post
Hi Andreas,
I tried your generic ruby script and could successfully generate the
file. Just one question: I recognized a slightly different data entry in
the &data& area for my u2713HM.
The script generated:
AP///////wAQrIBATDk3OSYWAQSlPCJ4Iku1p1ZLoyUKUFSlSwCBALMA0QBxT6lAgYABAQEB
Vl4AoKCgKVAwIDUAVVAhAAAaAAAA/wBHSzBLRDI5Sjk3OUwKAAAA/ABERUxMIFUyNzEzSE0K
AAAA/QAxVh1xHgEKICAgICAgAOc=
In your default 2713HM file you have:
AP///////wAQrIBATDAzMyIWAQSlPCJ4Iku1p1ZLoyUKUFSlSwCBALMA0QBxT6lAgYABAQEB
Vl4AoKCgKVAwIDUAVVAhAAAaAAAA/wBHSzBLRDI4TjMzMEwKAAAA/ABERUxMIFUyNzEzSE0K
AAAA/QAxVh1xHgEKICAgICAgAA4=
As you can maybe spot, there is a slight difference in the last part:
Oc= vs. A4=
Is this on purpose? What does it mean? And which one to choose now?
Thanks in advance,
chris @ideasenabled
Rate this post
I just realize there are even more differences in the following order:
Rate this post
The only difference is the serial number (different for each display)
and the checksum, so it doesn't matter.
Rate this post
I also see ghosting on my U2713H, much worse than on my old Eizo S2110W.
No idea how or whether it can be fixed in software.
Rate this post
Hi Andreas, just joined so that I could thank you for this incredibly
helpful post. Many of the official and unofficial Apple forums have
multiple threads about this issue with no solutions, I only found this
page because I had a hunch that it could be an EDID colorspace issue.
I've posted about it here, let me know if you want me to make any
Rate this post
New to the forum and had high hopes for this fix but alas on my Samsung
SyncMaster SA350 it seems to have compounded the issue. Now the external
monitor isn't recognised at all having applied the script.
I (foolishly) didn't backup the initial settings. Can someone tell me
how to rollback?
Thanks in advance.
Rate this post
robin: in my case I wasn't overriding an existing folder with the same
name in the Overrides directory, so to rollback I would just delete that
new folder the script had made.
If you'd overridden an existing folder in the Overrides directory
without making a backup I'm not sure how best to proceed. However, I
think it wouldn't hurt to move the folder to somewhere out of the
Overrides folder (so that there are no overrides for your monitor at
all), then restart and see if OS X applies the default settings.
Rate this post
Robin, I have the original files as a backup zip. So let me know in case
you need them. I need to dig them out but I would do it for you as I was
in a similar situation like you a month before.
Btw, can you not have a look in time machine? Afaik you should find the
former stub there.
Rate this post
Oh, I thought that unless you had the same monitor these would be
different files.
Rate this post
I was referring to the OS.X &native& ones (without external monitor).
The ones for the external LCD will be created after the external monitor
will be attached to the MBP.
So this should work LCD independent.
Rate this post
A quick thanks to Andreas and others you have contributed to this
I recently purchased a U2713HM to use with my mid-2010 MBA and
ran into the expected issues, first with getting the right cable to
drive it at the full
resolution (mini-displayport to
displayport is the cheapest solution), then with the issue of &off&
colors and odd processing artifacts when it is being properly driven in
YCbCr rather than RGB.
(I think some are not realizing the problem
because the Mac will report that it is using RGB - you have to use the
OSD on the monitor to discover what mode is it actually in.)
Anyway, using the attached file solved the problem completely and the
display looks great.
Rate this post
Many, many thanks for this Andreas!
My Dell U2410 worked beautifully on
my 2006 MacBook Pro and via DVI-to-MiniDP on my new MBP retina, but the
HDMI output looked lousy.
I had to take up a Thunderbolt port to use
the monitor, but with this fix I can now use the HDMI and free up the TB
port for a drive.
Thank you again!
Rate this post
I had the same problem. I suspect you are using 10.7 as I had the same
error. Upgrading to OSX 10.8 allowed me to run the ruby with no error. I
don't know ruby so it was easier for me to get the new OS instead.
Rate this post
& Robin, I have the original files as a backup zip. So let me know in case
& you need them. I need to dig them out but I would do it for you as I was
& in a similar situation like you a month before.
& Btw, can you not have a look in time machine? Afaik you should find the
& former stub there.
I would be grateful if you could dig up that zip file. I had the default
folder saved to my desktop, but something happened when i tried to roll
back. The file is gone. I was testing to see if RGB would look better on
my TV, but I need to be able to switch between 24 and 60 hz. Now that I
have &rolled back& it will no longer let me switch and is stuck on 60
hz. I am not sure if I corrupted a file or something when I copied the
default settings back in overrides. Please help!
Rate this post
I figured it out. When I switched back, it disabled all of my custom
switchresx resolutions. It recreated the file when I redid the custom
Rate this post
I have had the same issue as everyone else with my new Macbook Air
connected via HDMI to a LG E2260 monitor.
I apologise, but I have absolutely no programming experience. I
eventually found out how to &open terminal& but when I did enter the
&ruby patch-edid.rb& into the terminal nothing happened. I suspect that
I will need an external keyboard and mouse for this to work for the next
step as I obviously cannot type anything with the macbook lid closed?
Could someone take a dummy through the procedure in simple steps?
Rate this post
& I have had the same issue as everyone else with my new Macbook Air
& connected via HDMI to a LG E2260 monitor.
& I apologise, but I have absolutely no programming experience. I
& eventually found out how to &open terminal& but when I did enter the
& &ruby patch-edid.rb& into the terminal nothing happened. I suspect that
& I will need an external keyboard and mouse for this to work for the next
& step as I obviously cannot type anything with the macbook lid closed?
& Could someone take a dummy through the procedure in simple steps?
& Thankyou
Katie, I am happy to help you out. Skype might be best.
Programming skills are not needed. The script creates a folder. You have
to copy the folder to a certain place (command line in terminal).
Restart. Done. You probably need an external keyboard, right. Mouse is
not required.
Steps are:
- close lid so that you see the external monitor screen only
- open terminal
- run script (folder gets created at your current location: -& type pwd
(print working dir)
- copy the folder to &/System/Library/Displays/Overrides& via sudo cp -R
[YOURCURRENTWORKINGDIR]/[CREATEDFOLDERNAME]/
System/Library/Displays/Overrides/
- check whether it worked via: ls -la
/System//Library/Displays/Overrides/
- you should see the RubyScript folder there (see info below)
So for example:
sudo cp -R /Volumes/Free.../RubyScript
/System/Library/Displays/Overrides/
The command copies what's in the RubyScript folder to the other folder
See info for copy command here:
Hope that helps. ping me at hello AT ideasenabled.com (christian) if you
need help.
Rate this post
I'm not sure if the problems that Katie and some others are reporting in
this thread are the exact the same issue that we are all discussing
It is easy to confuse bad display resolution issue with the
ghosting/fuzziness problem. If you need to drive really large resolution
you need display port/mini-display/Dual Link DVI adapter,
HDMI/SVGA adapters won't cut it and display wont look sharp with it
The original thread here is about Retina Macbook Pro models driving
external display with
resolution or higher having two set of
1) Fuzziness/Ghosting issue on Dell U2713H/HM models
2) Macbook pro recognizing the external display as TV and hence using
YCbCr instead of RGB mode.
AFAICT, Andreas script only forces RGB mode I don't think it solves the
display quality problem, atleast not on my Dell U2713H.
FWIW, I removed the display override, tried the Apple Mini DisplayPort
to Dual-Link DVI adapter to see if it improves the display, it doesn't.
With Dual Link DVI adapter I do get the RGB mode automatically without
the override but the display is bad to my eyes and My comparison here is
the Apple Thunderbolt Display.
I have decided to return the dual LINK DVI adapter, and switch back to
mini display port adapter. Now I'm not even using the YCbCr override,
but adjusted the monitor settings (Uniformity Compensation Off, Smar
Video Enhance off, sharpness set to zero) to get the same display
Rate this post
Thanks so much!
This worked for me. I updated my macbook pro retina to 10.8.3 which
still didnt work.
So downloaded the U2713H override and copied into the folder as stated,
rebooted and perfect!
New dell ultrasharp u2713h working as it should.
Rate this post
I am a mac newbie and I am about ready to take it back due to this hdmi
monitor thing (I have one more day to figure this problem out before I
can take it back).
I have good color on it, and have downloaded OS X
Pictures, etc., look decent, but all text is still blurry. I
have spent a couple of hours trying to get the display right...still
I am running hdmi-hdmi from my late 2012 mac mini (which I
have read on other forums that this script works for).
My problem is, I
don't understand mac coding and I can't get the script to run.
download the script from above by saving the link to downloads.
open terminal, type in &ruby patch-edid.rb& and the only response I get
is &command not found&.
The process sounds simple as everyone says you
just type that into the Terminal and a new folder will be created which
you can then move to systems/library/displays/overide.
something I am not doing right?
I really appreciate your help as I
really like the new mac mini and want to keep it.
Rate this post
Andreas - you are a genius. Many thanks.
Your script worked fine for my HP LP2475w - I've been searching for a
fix for ages.
Rate this post
Apologies for the dum questions, I just came over to MAC OS with the
purchase of a iMac 27.
I have a dell U2410 attached as a second monitor
via mini-display to display port. Actually, the colors on the Dell seem
fine, my problem is text.
Regarding the code you posted as universal fix for forcing external
monitors to RGB: 1) What kind of file should I copy the code into 2)
What should I name the file 3) where should I save it in order to run it
3) How do I run it?
I tried copying the code into apple script editor and running it that
way, but I get syntax errors.
I also tried just saving into a text file
called patch-edid.rb and running from terminal, no joy.
Thanks for your help
Rate this post
Hi Andreas,
I use the U2713HM with a MBPr and have a problem with the screen
flickering completely when scrolling certain websites (fine patterns
seem to cause this behaviour, play.google.com is such an example, looks
like a signal processing artefact). My display is also detected as a TV.
I'd like to apply your fix (thanks a lot for sharing your expertise!!!),
but I use the DP audio output. As you fix removes some extensions, audio
seems to be broken afterwards.
Is there a way to fix that problem without disabling DP audio?
Thanks in advance!
Rate this post
Update: Applied the fix, DP audio still works.
Rate this post
Update2: RGB works now, but annoying flickering with certain websites
Rate this post
Does anyone know if this fix is necessary/works with OSX 10.6.8?
Rate this post
I have a new 27 inch iMac (2013 spec) on 10.8.3 and a Dell U2713H second
monitor. I got the mini displayport to display port cable - and the Dell
picture is clear at full
resolution BUT - the picture looks
washed out and I cant get the same color balance as the apple.
sure if this is just a difference in displays - or is the issue
discussed in this thread:
When I go through the Dell screen settings -
if I turn it to RGB - it goes awful - completely NG - so does that mean
it is receiving YCbCr?
I then tried to follow instructions on this thread but am not familiar
with terminal etc...
I downloaded &U2713H_U2713HM_Mac_EDID_override.zip& and put it on
I opened them both and choose the one with U2713HM in it (and deleted
the other)
I opened terminal and typed
&ruby patch-edid.rb&.
But this came up with an error message ?
So I am stuck - but would greatly appreciate any help :)
Rate this post
Thanks for this very useful post Andreas!
I have a U2713h with Macbook Pro Retina 15 2012. The file
U2713H_U2713HM_Mac_EDID_override.zip fixed the display and made it
I do not have audio out though (I'm using a Startech Mini-Display to
Display cable).
Just wondering if the file at the very top of this post has been fixed
to allow audio (ie. U2713H_U2713HM_Mac_EDID_override.zip) or is it the
other script: patch-edid.rb
Rate this post
Hi Andreas -
I have the U2713HM, which I have just had replaced due to the following
- faint diagonal lines across the whole screen
- image noise when moving windows/scrolling pages
- strange flicker across whole screen if an image on my screen changes
brightness quickly
The replacement monitor is suffering from the same problems.
I have tried using the Override files you provided but cant tell if this
has changed anything. How do I see what colour space the monitor is
using? I have gone into the monitors settings and it appears it is using
YCbCr. But if I change that to RGB, the screen has a green and red tint
The screen is connected to my Macbook Pro Retina via Mini DP to DP.
Any help much appreciated as this is driving me crazy and would really
like not to have to send it back to Amazon again!
Rate this post
You can't change it manually: screen goes crazy if you do - I have the
same setup exactly except I have the H instead of the HM.
You can use either the file at the very top of this page or the script a
little way down. Either way should leave it that when you look at your
monitor's settings, it will display RGB (after a reboot). After applying
the script it should leave it perfect!
Rate this post
Just thought I'd document my experience with this issue for others that
may be searching a fix. I'm a photographer running a Macbook Pro Retina
with an external DELL U2311H monitor for image editing.
Needless to say, suddenly discovering that the Macbook was outputting
YPbPr only has been a huge frustration to me.
I can confirm that this fix works correctly with the U2311H monitor and
doesn't interfere with Datacolor calibration.
A huge thanks to Andreas for creating and posting the script. Also to
Matthew for laying it down in simple steps...
...for the less tech savvy among us.
Attached files:
72.6 KB, 22479 downloads
Rate this post
Hello Andreas, my name is Gabriel and I live in Brazil.
I bought a Dell U2413 to use with a Macbook Pro Retina 15 &, but the
image is too bad, because the the Mac sends YPbPr signal to the monitor.
Forcing the menu to RGB image turns green and pink.
I executed your script only using the monitor (macbook closed), using a
mouse and wireless keyboard, but nothing happens. What am I doing wrong?
I'm stupid and I must have done something wrong. What should I do?
Look the screenshot on Terminal in attached.
Thank you and sorry for my bad english.
Rate this post
I did it! Had forgotten to copy the folder in the correct directory!
Thank Andrews!
Rate this post
Using MBR with 10.8.3 and Dell U2713HM
I extracted the U2713H_U2713HM_Mac_EDID_override.zip and moved the
contained folder into /System/Library/Displays/Overrides
I restarted the notebook with the connected U2713HM but this monitor
stays black. Nothing to see… :-(
What I'am doing wrong?
Rate this post
OK, found the problem - my mistake. You have to set the Input Source at
the monitor to DisplayPort manually... now it works perfect... thx
Andreas :-)
Attached files:
(1.5 KB, 3539 downloads)
Rate this post
I had to slightly modify the script for it to work with a Dell U3014.
The EDID was cut off without an additionally &-w 0& parameter to the
ioreg command.
Attached the updated script. Thanks. Works perfectly now :)
Rate this post
I've got the U241§3 on the non Retina Macbook Pro 2012 model and had
loads of the issues most people mentioning. Colour being off, not
looking sharp, basically looking worst than a cheap monitor! Thanks you
so much for this, the script works perfect and the monitor now looks
Rate this post
This script doesn't seem to work with an hp pavilion 23bw. can you help
on this one?
Rate this post
YES YES YES! Worked a treat - shame it doesnt get rid of the ghosting on
my DELL U2713H!
Thanks so much!
Rate this post
I'm executing script only with external monitor and got this
/System/Library/Displays/Overrides/patch-edid.rb:9: undefined method
`[]' for nil:NilClass (NoMethodError)
what I'm doing bad?
Rate this post
Thank you so much for your solution. I was sick and tired with DELL
U2713H changing settings on its own when connected to mac as a secondary
It was so frustrating to work with photographs in Adobe Lightroom and
not seeing consistant color and tone, because display was tweeking it
self for some reason.
I was going to sell it and get another one...
I did as you advised and now it doesn't tweek the color and tone and
works consistently.
Thank you for your effort to figure this issue out and sharing it with
the rest of the world. Appreciate it a lot!
Rate this post
I am also getting the error mentioned above while running the script:
undefined method `[]' for nil:NilClass (NoMethodError)
I followed the advice here to change line 7 and it still didn't work:
Any thoughts?
Rate this post
I have an older 2011 MBP with thunderbolt, and a Dell U2713HM.
Currently connected via a mini -& display port, I dont see too much of a
problem other than the dell looks vastly less sharp than I would expect
for such a high res monitor even at . (Sharpness has to be ~75
to look decent, any higher and I get halos, lower and it looks scaled)
Would this 'hack' help me? Most of the replys are from retnia based
Rate this post
If I don't want to remove the extensions block, should I delete the
following lines from your script?
puts &Number of extension blocks: #{bytes[126]}&
puts &removing extension block&
bytes = bytes[0..127]
bytes[126] = 0
bytes[127] = (0x100-(bytes[0..126].reduce(:+) % 256)) % 256
Is this correct? Will the checksum be recalculated correctly?
Rate this post
The script that was supposed to work on various models worked fine for
me on the u3011, with the new u2413 I cannot get it to work properly.
The sharpness and image is fixed but when editing in Premiere there is a
purple box the fills the area that the video is being played. As soon as
I stop playback it returns to normal. Sometimes I have a large purple
box overlaying the screen thats about 80% the size of my screen. Tried
for a screenshot, but this is caused by the monitor.
Attached files:
259 KB, 3370 downloads
Rate this post
Videos I play in the browser also do this. Notice the overlay on just
the video, it extends past the player slightly.
Attached files:
3.94 MB, 6395 downloads
Rate this post
I was just about to post the same issue as Ryan - overlay on video
players. But had a one last look in the settings and found that turning
off Smart Video Enhance gets rid of the overlay. See attachment
Rate this post
great thread... just a heads-up re: mbp retina and U2713HM... Somehow my
2 U2713HMs just fried!
The monitors now have 'image burn-in' even after disconnecting the
displayport cables, powering down for 5 minutes and powering back up.
Found a post on the dell site with another mbp user having similar/same
Not being an alarmist just a heads-up.
Wondered if it could be related
to this thread (color mode driving the monitor).
I'm off to sort out if there is a factory reset and see what's what.
I also had some trouble getting the 2nd monitor to work initially. At
first, not detected at all. Then detected (showed up under Displays) but
was a blank screen. After unplugging everything, re-plugging and
rebooting the mbp the 2nd monitor started working and continued to work
until today (4 whole days).
Rate this post
Works great! I noticed my problem but did not know how to solve it. Your
solution came to rescue nicely.
Rate this post
Thanks to GabrielMichael. I too fixed the problem with the display
override profile, but was getting the light blue overlay on video
content in the browser in OSX 10.8.3 on a rMBP, connected via a cheap
mini-DisplayPort to DisplayPort cable.
This was fixed, as GabrielMichael says, but turning off Smart Video
Enhance. Everything now looks great.
Thanks! :-)
Rate this post
Andreas - A newbie question. I have a MacMini with OSX 10.7.5 and want
to configure per your script with Dell U2410 to eliminate fuzziness.
questions:
Will the script allow the HDMI connection to work, or just DVI, or
I got the U2410 primarily for photo editing and want to color
calibrate it with Spyder4Pro.
Will the Spyder4Pro software conflict or
limit your script for fuzziness?
Thank you!
Rate this post
Hi everyone
i have an imac 21.5& and just baught a Dell U2913wm monitor and have the
YCbCr issue.
i have followed the steps andreas has given and the terminal has created
the new folder correctly but i dont have the Displays folder in my
my OS X is in french but there is not such folder or similar folder in
the library folder
thanks in advance for your help
Rate this post
I am a MacPro 2009 / Ati HD4870 user looking for a 24&-27& screen to
properly work in Adobe RGB gamut.
I found this web page looking for info to find a good screen for CGI
games and films modelling, worried because of the 8bit (not 10bit)
framerate output signal of apple machines.
I actually haven't decided any monitor yet, so I don't own any U2713H/HM
monitor. Anyway I just wanted to thankyou for making fixes and sharing
them with other people, even when some brands which make and sell
screens or workstations don't.
THANKYOU Andreas Schwarz
Rate this post
The 'burnt-in images' dissapated over the course of 5-6 hours. Monitors
seem ok now.
I found several other references to similar issues with the monitors.
Rate this post
I am also getting the error mentioned above while running the script:
warning: Insecure world writable dir /usr/local in PATH, mode 040777
patch-edid.rb:9: undefined method `[]' for nil:NilClass (NoMethodError)
Rate this post
Same error, with my MacBook Air with Lion, and with my MacBook Pro with
Mountain Lion...
MBAir:Downloads israel$ ruby patch-edid.rb
patch-edid.rb:26: undefined method `[]' for nil:NilClass (NoMethodError)
Any other option, in other language? I am developer, but zero idea about
Ruby, and I can not translate this script to another language...
Rate this post
I have seen why the script gives this error:
202:Downloads israel$ ruby patch-edid.rb
patch-edid.rb:26: undefined method `[]' for nil:NilClass (NoMethodError)
It's because the &ioreg& command gives its output truncated:
+-o AppleDisplay
&class AppleDisplay, id 0x, registered,
matched, active, busy 0 (2 ms), retain 7&
&DisplayProductID& = 22192
&IODisplayEDID& =
&00ffffffffffff001e6dbf1e78eaaec5a25054a
&DisplayVendorID& = 7789
The IODisplayEDID is truncated and has not all the characters it should.
It finishes with a $ symbol, not with &.
How can I got all the output from this command? Why is it truncating
this line?
Rate this post
I updated the script with the change suggested by BugRoger to prevent
truncated lines. Please download and try again.
Attached files:
545 KB, 6183 downloads
Rate this post
So here is an interesting thing I found.
I recently purchased a Dell U2713H, and while it worked fine, recently
it started going into 1080p mode only. This frustrated me quite a bit,
and below are my learnings (how I fixed it).
Macbook Pro Retina 2013 model (two minidisplay ports)
Old Apple Cinema Display ADC - Plastic Shell ()
Dell U2713HM 27&
See attached image how I have the graphic hooked up. The Acell cable is
for the Dell, the other for the Cinema Display.
I tried everything, holding down Option and clicking on &Scaled& in
displays, restarting, running funky scripts, connecting only one screen
etc. Nothing worked, although it did work at first.
Then... THEN!! I accidentally switched MiniDisplay ports. I put Dell's
cable where the Cinema was plugged in and vice versa. Presto!! It
Now it works right every time, in-sync with the on/off of the rMBP's
screen, and when I tried to switch them around (just to test) I was
experiencing the problem again.
Hope this helps!
Rate this post
Would somebody mind clarifying for me whether it's in fact necessary to
run a script? I've simply dragged and dropped the files into the
specified directory and now see Dell U2713HM EDID override in System
Preferences following reboot. Is that it?
Rate this post
I have just received my DELL U2713HM screen today and connected it up to
my 27& iMac using the supplied DVI-D cable and Thunderbolt to DVI
connector.
I am happy with the colours on the Dell monitor, but my problem is that
the Dell does not want to go up to max resolution of
my iMac's resolution.
Can you point me in the right direction for a solution.
Rate this post
I have the same question related to monitor calibration posted by &Nolan
Snook&. Using this EDID override, is color calibration still possible
with i1Display Pro, Spyder, Lacie and etc?
I mainly work with images, so I need the colors to be accurate.
Rate this post
& Is that it?
Yes, that's it.
& Using this EDID override, is color calibration still possible with
& i1Display Pro, Spyder, Lacie and etc?
Yes, it has absolutely no effect on color calibration.
& I have just received my DELL U2713HM screen today and connected it up to
& my 27& iMac using the supplied DVI-D cable and Thunderbolt to DVI
& connector.
& I am happy with the colours on the Dell monitor, but my problem is that
& the Dell does not want to go up to max resolution of
& my iMac's resolution.
You are probably using a Single Channel DVI converter or cable, which
does not allow the full resolution. Use a (Mini)Displayport cable.
Rate this post
Andreas, thank you so much for providing this fix. I've been searching
for a fix for over a year now as I've been plagued by the YPbPr problem
with my Dell U3011. Your UPDATE at the start of this thread worked
perfectly once I figured out how to run the ruby script inside terminal
and where to put the finished file. When calibrating with my Spyder 4
Elite, I now get 95% Adobe 1998 RGB. Fantastic!!
Ryan L, if you're still looking for a fix this update worked pefectly
with my Dell U3011.
(*UPDATE*: see here for a universal fix that works for all monitors:
& Is there any chance you could walk me through this process or upload an
& appropriate file for a Dell U3011?
& Having the exact same problem, and it's been a real nightmare. Would be
& eternally greatful!
& I'm trying to figure it out on my own but I'm not sure where to look
& within the output from ioreg -l -w -0 & ioreg.txt
& Thanks in advance for any help, appreciate it.
Rate this post
I feel like an idiot, as this patch seems to be working for most people.
I am unfamiliar with linux and have rarely opened the terminal on my
Could someone explain in english (as though they were explaining
this to a child)
how to use the patch to force my macbook retina to
I opened my terminal and pasted in &ruby
patch-edid.rb&
but nothing happens.
I am also unsure how to get to my home directory
via terminal.
And then once I do, do I copy and past this code into the
So confused, sorry.
Hope someone can help.
require 'base64'
data=`ioreg -l -w0 -d0 -r -c AppleDisplay`
edid_hex=data.match(/IODisplayEDID.*?&([a-z0-9]+)&/i)[1]
vendorid=data.match(/DisplayVendorID.*?([0-9]+)/i)[1].to_i
productid=data.match(/DisplayProductID.*?([0-9]+)/i)[1].to_i
puts &found display: vendorid #{vendorid}, productid #{productid}, EDID:\n#{edid_hex}&
bytes=edid_hex.scan(/../).map{|x|Integer(&0x#{x}&)}.flatten
puts &Setting color support to RGB 4:4:4 only&
bytes[24] &= ~(0b11000)
puts &Number of extension blocks: #{bytes[126]}&
puts &removing extension block&
bytes = bytes[0..127]
bytes[126] = 0
bytes[127] = (0x100-(bytes[0..126].reduce(:+) % 256)) % 256
puts &Recalculated checksum: 0x%x& % bytes[127]
puts &new EDID:\n#{bytes.map{|b|&%02X&%b}.join}&
Dir.mkdir(&DisplayVendorID-%x& % vendorid) rescue nil
f = File.open(&DisplayVendorID-%x/DisplayProductID-%x& % [vendorid, productid], 'w')
f.write '&?xml version=&1.0& encoding=&UTF-8&?&
&!DOCTYPE plist PUBLIC &-//Apple//DTD PLIST 1.0//EN& &http://www.apple.com/DTDs/PropertyList-1.0.dtd&&
&plist version=&1.0&&'
&key&DisplayProductName&/key&
&string&Display with forced RGB mode (EDID override)&/string&
&key&IODisplayEDID&/key&
&data&#{Base64.encode64(bytes.pack('C*'))}&/data&
&key&DisplayVendorID&/key&
&integer&#{vendorid}&/integer&
&key&DisplayProductID&/key&
&integer&#{productid}&/integer&
Rate this post
& You are probably using a Single Channel DVI converter or cable, which
& does not allow the full resolution. Use a (Mini)Displayport cable.
Thanks Andreas: You were absolutely right. I bought a Mini-Displayport
to Displayport cable and now have full
resolution. Yay!
Appreciate the help.
Rate this post
Try this Aunt Lucy
1. Open terminal and type in pwd
This will tell you what your present
working directory is and you should see something like /Users/AuntLucy
2. Open a Finder window and move or copy the patch-edid.rb file from
wherever your browser downloaded the file into the the /Users/AuntLucy
3. Back in Terminal, enter &ruby patch-edid.rb&. This will create an
override file for your display which you will now see in your finder
window. It's called DisplayVendorID-10ac
4. Move or copy this folder to /System/Library/Displays/Overrides
5. Restart your machine
Rate this post
Huzzah! Thanks very much for writing this. It's like coming out of a
discoloured fog and it also as a side-effect solved a problem I was
having where it liked forcing my U2711 into 1080p instead of native res
over DisplayPort.
Rate this post
Ah, now it's working.
Actually the script didn't work in the terminal
until I rebooted the machine first.
Thanks again!
Rate this post
Thanks Andreas, can not believe that any computing display device does
not default to RGB.
Rate this post
When I enter the &ruby patch-edid.rb& in Terminal nothing happens.
What can be the reason for that?
My screen still is pink when I change to RGB mode.
Rate this post
In my MBP 2012 with 2713h works your hack like a champ!! Thanks!!!!!
Rate this post
THANK YOU!!! This is tremendously useful. My Dell U2713H was working
fine connected to my MacBook Retina, then one day it started showing up
as a TV and I couldn't get native resolution. Your fix works like a
Rate this post
Hi Andreas,
I use Macbook Pro early 2011 with 10.8.4
Before running script, incoming signal was YCbCr. After I have tried
above method, my Dell 2713H completely does not work(blank monitor) with
miniDP - DP. However, it's still working DVI-D to HDMI(to miniDP), but
res. Monitor shows: There is no signal coming from your
computer...
However, when I tried with MacBook Pro 2009 with 10.8.4 and its
absolutely perfectly working with RGB!!!
I have no idea, what happened with my MacBook Pro 2011. I have even
re-installed whole Mac OS, but problem still exist.
Any suggestions?
Many thanks!
Rate this post
& Try running the attached script. Open Terminal and enter &ruby
& patch-edid.rb&. This should give you an override file for your display.
I've clicked this link and it only takes me to another window showing me
the script, rather than downloading it. Do you have any idea why this is
happening. Could the DL link be dead or something? I really want to fix
my monitor issues but it's not letting me.
Rate this post
This is a great forum thanks everyone, I have a Samsung syncmaster
s23b350 I have tried to follow the instructions above coping the file
patch edid.rb above into system/library/display/overrides but it didn't
work I will really appreciate any help as atm I'm doing assignment and
getting blind.
Thanks in advance
Rate this post
My problem was in display version 1.2
I changed back to 1.1 and it's working perfectly.
Rate this post
& Update2: RGB works now, but annoying flickering with certain
& websites
& persists.
I have the same problem (Dell U2713HM), certain websites with patterned
backgrounds causing the display to flicker something terrible (causing
migraines), even after the tab for the site(s) has been closed, flicker
continues for up to 3 hours afterwards!
Before this thread, I was thinking it was a gfx memory problem on my
Any ideas would be greatly appreciated.
Many thanks.
Rate this post
I am trying to create this override folder for an LG monitor (27ea83),
1. Chrome wouldn't let me download the file, just opens it as a link, so
I have to paste the code into TextEdit then save it as .rtf then rename
the file and click use as .rb
2. though the file is in the right folder, when I run the command in
terminal it gives me the following error: patch-edid.rb:1: syntax error,
unexpected $undefined, expecting '}'
{\rtf1\ansi\ansicpg1252\cocoartf1187\cocoasubrtf390
I looked through the code but all { seem to have a }, so I don't quite
understand what the issue is. Also, I am completely illiterate when it
comes to linux, so not the slightest clue as to what I'm trying to do
which makes debugging ever so difficult :)
Anyone any thoughts?
Is the script being screwed up by me having to save it as rtf first?
PS. Andreas, thanks a million for the DELL files, they worked like a
until I had to return one U2713H monitor after another whilst trying to
decide which is the bigger pile of dung, DELL quality assurance or their
atrocious customer service. A word of advice: don't buy DELL, especially
if you're outside of the US, they just get your hopes up with truly
amazing colours, then let you down in every other way imaginable. Amazon
told me after the second return that they won't even bother replacing
it, the whole batch is a waste of space, and that I should order
straight from DELL, as they would have the latest versions, which might
actually work. Not if I can help it, thank you.
&rant off&
Rate this post
Hi. I'm not bright when it comes to running scripts but can you tell me
exactly where to / how to run the script that you recommend to over-ride
Mac display settings? I clicked on the link and it gave me a page of
code - where do I put it before entering the command into the terminal?
Really sorry for being a bit thick on the matter!
Rate this post
Fixed the problem with brand new Haswell Air and Dell U2410. Thanks a
Rate this post
I'm experiencing the same problem with 15& Macbook pro Retina and Dell
I've tried the script but the problem remains.
Do I need to change something in the script for it to work?
Attached files:
(618 Bytes, 765 downloads)
219 KB, 3346 downloads
Rate this post
I'm also using a DELL U2312hm monitor with rMBP15& and applied the
script, copied the new folder and chose it in the Color tab under
display (in preferences). I'm not sure there's a big difference, the
text on Google results is a bit blurry (my eyes are tired after a few
minutes of reading).
does anyone else experiencing the same?
print screen (example)
the script output file
Please help me.
Rate this post
This fixed the horrible sharpness/haloing I had with my U2913WM when
used with my Retina MBP. Thank you so much!
Rate this post
& I'm experiencing the same problem with 15& Macbook pro Retina and Dell
& U2312HM.
& I've tried the script but the problem remains.
& Do I need to change something in the script for it to work?
You have to run the script, which generated a folder in the same
directory it was run from. Then move the folder to
/System/Library/Displays/Overrides
Rate this post
&& I'm experiencing the same problem with 15& Macbook pro Retina and Dell
&& U2312HM.
&& I've tried the script but the problem remains.
&& Do I need to change something in the script for it to work?
&& thanks!
& You have to run the script, which generated a folder in the same
& directory it was run from. Then move the folder to
& /System/Library/Displays/Overrides
I've tried it, the fonts on the external display are still very blurry
(unless I enlarge the font size by 150%).
I've bought a mini display port to display port cable which didn't help
I'm using U2312hm display, on a windows VM (runs on the rMBP) the fonts
are sharp and clear.
what can I do?
Rate this post
I've just discovered this thread, as I'm having a similar problem with
my HP 22& HDMI monitor.
Local Apple store folks spent a total of 2 1/2
hours fiddling and I'm still seeing blurred text on the monitor when
connected to my new MacBookPro.
The monitor worked fine with my old
white Macbook.
Main question I have for this list--which I saw raised above, but not
answered--is if this fix works with HDMI as well as DVI?
Rate this post
not trying to derail the thread, but you guys are closest to a solution
to my related problem, so maybe you could help.
My problem is actually the inverse: my 2010 MBP decides to output full
range RGB even though it correctly identifies my TV as a TV, provides
overscan slider etc.
My TV is capable of reproducing full range RGB and probably correctly
advertises this in the EDID. As I have connected multiple devices
through an AVR, some of which only output limited range/ycbcr I would
however like the Mac to output ycbcr as well.
(My gf's MBA running the same version of OSX (10.8.4) outputs
ycbcr/limited range btw)
What would I need to change in the script to inverse its behaviour,
forcing ycbcr output?
(I read up on EDID a little bit and think I should set bits 4-3 of byte
24 to &10& but I am neither sure about that, nor how to convert that to
the encoding used in the plist nor if I would have to change anything
else in order to not break things.)
Any help would be highly appreciated!
Rate this post
I just wanted to thank you for making this file available, it's made
quite a difference to my dell u2713h display, everything is that more
Again, thank you
Rate this post
& I've tried it, the fonts on the external display are still very blurry
& (unless I enlarge the font size by 150%).
& I've bought a mini display port to display port cable which didn't help
& I'm using U2312hm display, on a windows VM (runs on the rMBP) the fonts
& are sharp and clear.
& what can I do?
Please, Help!
Rate this post
Thanks very much for posting this script.
I have a Dell U2711 with a 2012 Retina Macbook Pro.
I haven't ever noticed any visual/image problems like some people have
regarding blurry text or wake for sleep issues but I have always noticed
the YPbPr issue.
I noticed this script however disables support for audio over the
displayport for the monitors, I wondered if it is possible to remove
this feature from the script since I do require displayport audio to
hook my U2711 up to my external speakers.
Thank you very much for this solution.
Also I haven't upgraded to 10.8.4 yet, does anyone know if there was an
official fix applied?
Rate this post
& I noticed this script however disables support for audio over the
& displayport for the monitors, I wondered if it is possible to remove
& this feature from the script since I do require displayport audio to
& hook my U2711 up to my external speakers.
Try the following steps:
1. remove the existing override file and reboot
2. remove the following lines from the script and run it again:
puts &removing extension block&
bytes = bytes[0..127]
bytes[126] = 0
4. install the new override file and reboot
Please tell me if this has the desired effect.
Rate this post
Hi Andreas,
Apologies, I did not fully test the script before posting that reply.
I found my audio works fine over Displayport still without modifying the
It seems to be working fine, I've definitely noticed the change in
certain colour's compared to over YPbPr previously. Also I can now use
the sRGB feature of the monitor which previously never worked for me on
My only question is are there any other 'side effects' from using this
script since it has removed extension blocks?
Also I ran this script when I had my setup in multiple display mode, the
U2711 was my primary display though so I assumed it would pick up the
primary display which it has done, does this matter?
Thanks again
Rate this post
Hi Andreas,
I'm having a different issue that will require the same solution, I
fear. I'm attempting to connect a 2009 MBP to an older Mitsubishi
projection HDTV via MDP to DVI, OS 10.8.6 keeps forcing the color space
to RGB, the TV takes YPrPb DVI signals. I was fiddling around with the
code for your patch and I think I only have to change the line that
refers to forcing the EDID in to RGB, I'm not exactly a software
developer and was wondering if you could direct me on how to convince
this Mac to do the opposite of what does for Dell monitor owners?
Rate this post
Try these lines:
puts &Setting color support to RGB+YCbCr&
bytes[24] |= 0b11000
Disabling RGB completely is not possible in EDID, so I'm not sure if
this is enough to make OS X use YCbCr. Maybe you need to fiddle
something with the EDID extension blocks.
Rate this post
Hello again,
I wanted to confirm to anyone searching that the script provided on here
(at ) works like a charm for the
Dell U2711.
I have been using it for a few weeks now. I did not need to modify
It correctly forces my Retina Macbook Pro to use RGB for the display
over Displayport instead of YPbPr.
This now allows me to use the monitors sRGB feature (which never seemed
to work right on YPbPr). I have not noticed any other side effects.
Sound over displayport works fine and there has been no issues with
waking (I didn't have any before though).
I also saw some people mentioning way above about the display having
ghosting. Unfortunately this seems to be a downside of the DellU2711 and
it does this with whatever it is plugged into (windows, mac, HDMI source
Thanks again for your script.
It has saved a lot of my time and has prevented me from buying
additional things to fix it, since I do a lot of photography, graphic
and web design, colour accuracy is important for me.
I would recommended that anyone using a Dell display with a Thunderbolt
Macbook downloads this script!
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Thank you Sir! You saved me from having a heart attack.
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I'm having a similar problem with EDID and I'm not sure if this will
help fix the problem, maybe you can shed some light.
Number of Mac Mini's MBP (4 total). Using &Display Port& to VGA adapters
IO Gear KVM - &VGA& in/out.
My problem is that on my main Mac mini, a mid-2011 which actually uses
Thunderbolt instead of a Mini Display port, won't read the EDID of the
monitor though the KVM.
IOGEAR recognizes the issue, but won't fix it but &recommends& a KVM
that is 4 times more expensive.
My work around is:
1) Boot Mac mini which shows the right resolution, but it is shifted 4
inches to the right.
Detect displays comes back with unknown.
2) Unplug VGA from KVM and put it directly into Mac Mini adapter, Detect
displays correctly identifies HP2509 monitor, the image centers on the
3) Plug Mini back through KVM everything is good.
4) Turn off sleep and enable screen saver, so it never sleeps - it never
loses EDID.
An older MacMini, older MBP, mid-2012 MBP don't have any problem
recognizing the monitor through the KVM.
I've tried swapping adapters,
cables, ports but just can't get it to work.
I'm hoping I can grab the correct EDID and use the Override to force it
to HP2509 when it doesn't think there is anything attached.
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I have MBP Retina 15& connected to Dell U2713H and at first it did not
look good at all, especially, the text was fuzzy. For a second I thought
I had done a bad deal.
I first started out with a HDMI cable that I quickly found out only
gives 1080 res.
Then the Display Port to Mini display port that came with the screen.
Still no result. Probably, it would work with the settings below but I
haven't tried it.
After that I bought a Mini display port to mini display port cable
(11EUR). Still no result.
But I left the cable MDP-MDP and started playing around with the
settings and now it looks rather decent:
Sharpness: 0
Preset Mode: Paper
Brightness: 55
Contrast: 60
Input Color Format: YPbPr
Gamma: MAC
Color Preferences in MAC: Dell U2713H (LCD Color looks ok too but I
prefer Dell).
I did not use the script but it looks really good after changing the
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After watching hi-res images in Photoshop I changed the settings to:
Sharpness: 0
Preset Mode: Color Space =& CAL1
Brightness: 50
Contrast: 50
Input Color Format: YPbPr
Gamma: MAC
And now images, videos and text looks great!
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Hi Andreas,
first thanks for your support... I run the script and tried to copy the
generated folder into Library/Displays/... but I can?t see a Folder
called Displays in my Library.
Do you know why? What can I do?
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I just bought a LG 27EA83R-D monitor and had the same problem. The
script fixed it. You're awesome. Apple is a PITA. Thanks for creating a
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I am still having the blurry text. I tried everything mentioned in this
forum, any help will be very much appreciated
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On the U2713H you need to set sharpness to 50% and contrast to 50% to
get a pixel-accurate display.
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Hello I've tried doing this for the Dell U2711 on OSX 10.8.5 and the
issue remains. I tried 3 different times. the screens still flickers at
the native resolution
is there anything else I could try
specs on the mac are:
mac pro mid 2012
12 core version
ATI 5779HD 1gb ram video card.
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Not sure if this will help, but I also had a flickering problem.
Quite by chance, I was rearranging my desk and needed to change where
things plugged in.
I plugged the Dell in to a 'proper' surge protection socket (not a
consumer cheap one) and when I switched everything back on the
flickering had stopped. So I had a 'dirty' power supply or something.
I still get some flickering on visiting certain webpages with fine
textures, but 99% of my flickering display seems to have stemmed from
the inadequate power supply.
I hope this helps.
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Sorry that's not the case. I've used different power cords and different
outlets and power bars..
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& I am still having the blurry text. I tried everything mentioned in this
& forum, any help will be very much appreciated
I experienced the same problem and adjusted the sharpness setting down
to zero and now text is readable.
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It turns out to be the cable I was using. I was using a generic
canadacomputers.com cable at first and when I switched to a startech
cable it started working flawlessly
Thanks for all the help in this thread. It helped to weed out the
possibilities
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Thanks very much for posting this. I am running on MacMini and the EDID
override solves my display problem completely.
I am trying to get audio over the display port as well - is it possible
to do a version with audio enabled?
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Audio should actually still work (at least I can still see the
DisplayPort audio device in the audio settings).
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Hello Andreas and everyone who can help,
I come across this forum as I have a similar problem with my
Macbook Air and the Dell U2711
The graphics and the fonts are blurry .
I use the external monitor for editing .
I am novice with the scripting and making fixes you all discussing here
Could you please guide me trough what to do and what files to download
as there is so many of them.
What to do step by step after downloading the fix
Please guide me trough
Thank you in advance
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Do you guys know how to fix the blurry fonts problem on external
fontsmoothing settings doesn't make it better.
Does any of you have it too? using a win7 VM produces excellent display
(fonts included), OSX doesn't.
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HI Andreas!
Thanks for the awesome script, I have multiple dell u2711 monitors
hooked up to my 15 macbook retina. Do you know if this works with
multiple monitors? at this point I was only able to get one to work out
with the script :(
Any ideas?
thanks a bunch!
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Can this script work with other monitors?
I have a new LG 29EA93 running with a brand new Macbook Air (with the
G500 GFX card) running at 2560 x 1080
IF you could help with a file for that you would be a bit of a hero to
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& HI there
& Can this script work with other monitors?
& I have a new LG 29EA93 running with a brand new Macbook Air (with the
& G500 GFX card) running at 2560 x 1080
& IF you could help with a file for that you would be a bit of a hero to
I did run the generic script above and it didnt work for me.
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Hi Andreas,
I have a mba 2012 and connect to U2713H at home and a &standard& monitor
at work. In case I apply the fix script forcing RGB, which fixes the
U2713H problem, will it cause a problem with the &standard& monitor?
Thanks again
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I hope someone will be able to help my problem, blurry fonts on external
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ah crap... with the new mavericks OS X upgrade, its batch, and this
script doesn't work. The generated folder even when placed in the
correct directory isn't picked up by OS X.
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Just upgraded to Mavricks and it reverted to the old &television& color
profile for my Monoprice 27. I just ran the script again and it worked
great. Thanks!!
Mavricks 10.9
2012 Macbook 15
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I just installed mavericks and i can't reinstall the patch to fix this
issue, error log:
found display: vendorid 4268, productid 41004, EDID:
00ffffffffffffeab325ac54a5
4b714fc80a070ba
23a582c001e011d
1de206ead08a20e02d
Setting color support to RGB 4:4:4 only
Number of extension blocks: 1
removing extension block
Recalculated checksum: 0x39
00FFFFFFFFFFFFE2B325AC54A5
4B714FC80A070BA
patch-edid.rb:33:in `initialize': No such file or directory -
DisplayVendorID-10ac/DisplayProductID-a02c (Errno::ENOENT)
from patch-edid.rb:33:in `open'
from patch-edid.rb:33:in `&main&'
federicos-mini:Overrides abadfederico$
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Just upgraded my 2010 MBA to Mavericks and I immediately thought, &the
fonts look funny&.
Sure enough my EDID override file was gone and my
U2713HM was in YPbPr rather than RGB mode.
I was able to fix it by simply repeating the steps I had done earlier:
copying the DisplayVendorID-10ac folder (which is in a zip file in the
very first post in this thread) and placing it in
/System/Library/Displays/Overrides.
After a reboot, I was back in RGB
So at least for the U2713HM, the previous fix still works, but you have
to do it again - Mavericks wiped out the old fix.
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Installed Mavericks. Works fine after repatching. Thanks a lot for your
patch!!!???
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just FYI, I was not able to get this to work with mavericks on a u3011,
tried reusing the script with no luck
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Doesn't work well with Mavericks :(
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Dell U2713H no good after Mavericks upgrade and reapplying the file.
Worked fine on Mountain Lion. :(
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The script DID work for my U2413 after upgrading my 2011 MBP to
Mavericks, just like on Mountain Lion.
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the weird thing for me is after using the script, it is creating a
profile but the monitor is still staying on a YCbCr colour space instead
of RGB when I navigate through the monitor menus (dell u3011)
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ok I think I managed to fix it. Reinstalled mavericks, I disconnected my
second monitor (dell 3007WFP), then executed the ruby patch above.
Afterwards, I copied it to system/library/displays then rebooted.
The monitor was in RGB mode. Re-connected the dell 3007WFP. Rebooted.
Monitor stayed in RGB mode. Color was still &off& however I selected the
sRGB profile and it looked correct. Never had to select sRGB before...
but at least it looks good now.
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Just to be clear, here's the process on how I got it to work on
Mavericks:
1. I reinstalled a clean OS. Not sure if required.
2. Disconnect all monitors except the one you want modified.
3. execute the ruby patch above.
4. Copy the resultant directory to system/library/displays/overrides/
5. Reboot.
6. Ensure the new profile is being used, if the colours seem &off& use
sRGB profile. The monitor will remain in RGB mode.
7. Reconnect additional monitors.
I tested that the monitor remains in RGB even when it's
disconnected/reconnected, and it seems to. So should be good to go....
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I have followed the instructions for the script here to get my new Dell
S2740L 27& monitor to work properly with my new Mac Mini. The Ruby
script seemed to execute nicely but where is the folder placed that it
supposed to create? Is that put automatically under
/Systems/Library/Displays/Overrides ?
So far there appears to be no change even after reboot.
Do I need to change something in the system settings under display
profiles or something as well?
Please advise cause the lack of crisp display is getting to my nervs.
Thanks in advance
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In my case of Mavericks upgrade, I have to remove the display profile
and then the patch would work. otherwise, my external monitor is not
recognized by my MBP.
cd /Library/ColorSync/Profiles/Displays/
sudo rm DELL\ U2713H-F4-ABA3-1ADB-6E.icc
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After upgrading to Mavericks, i just have to reapply the patch and it's
working again.
Many thanks for this very helpful solution.
Ra