Odd green squares display problem

Hi.
In some applications, such as Keynote, Pages and World Of Warcraft, my Macbook Pro does an odd thing with the display. Sometimes squares appear around the centre of the screen (less than 10px in size) and they're often clumped in a bit of a checkerboard fashion. In pages they tend to be black, but in Motion they're green and Warcraft they change colour.
Any ideas what this could be?

I've had something like that. First I thought my Mini DVI to DVI adapter had a loose connection, because "jiggling" it (as you put it) solved it most of the time.
Then it turned out to be the DVI cable itself. Since using a different cable the problem never surfaced again ...
Alexander.

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Odd display problems

I run two 19" CRT monitors off my G4 QS...have for years with no problems. This morning, I arrived in my office, computer running with both monitors displaying fine, and, without touching anything, the left one went dark. I thought I might have jostled my desk and loosened the AC connection, so I shut down, checked all connections to find no problem. I restarted, only to find that my right monitor had lost its signal too. The power light on this monitor went from green (normal-on) to yellow after 10 or 15 seconds of being turned on (never seen that before).
I didn't have time to deal with this problem, and had to go home to get some work done, leaving the office computer running. Late this afternoon, I popped by the office again for 5 minutes while running errands and found the yellow light on the right monitor blinking (another "never seen before"). I turned off the power on the display, then back on, and the display actually appeared, but at a very odd resolution (sign-in screen icons were signficantly larger than I'd ever seen them), and there was a strange distorted vertical line that "zapped" on and off. Again, I didn't have time to deal with this and had to leave it.
I've done some research here at home, but still don't have a strong sense of what the problem might be. Might resetting the NVRAM do anything? Can you even reset NVRAM on a QS? Might it be a graphics card problem? If that is likely, what card would be a good replacement?
Many thanks...
Message was edited by: Richard Pasley

Have you tried using only one monitor?
Have you tried starting up from a CD?
You can reset NVRAM. Resetting NVRAM "fixes" some display problems. See Mac PRAM, NVRAM, CUDA/PMU & Battery Tutorial
 Cheers, Tom

Hello to all: My iMac has developed a video display problem. It displays everything in cartoon like colors - purple, green, blue. Can this be repaired? Is there a way to output to a different monitor? Thanks in advance! isplays

Hello -
My iMac has developed a video display problem. Everything now appears in a strange, cartoonish way. Purples, greens, blues. Can this be fixed, and if so, any idea how much it might cost? Also, could I output to a seperate monitor? I plan to replace the unit , but cannot right now. Thanks!

Go to System Preferences > Universal Access > Seeing.
In the Display area, reset it to "Black on white" by clicking that checkbox.
You can also reset it by pressing Command-Option-Control-8

Odd Display Problems - Solved (& More...)

Earlier today I picked up the weird display problem shown in this thread: http://discussions.apple.com/thread.jspa?threadID=1524985&tstart=30
I went ahead and reinstalled the Leopard Graphics Update and reset the PRAM. Problems seemed to go away. But then I ended up with an even weirder white-on-black display that looked a lot like an xray. So reset the PRAM again. No fix. Then restarted in SAFE mode - all OK, so probably not hardware. Then ran Disk Utility from the Leopard System CD. No probs revealed. Problem (white-on-black) came back on restart. Searched Discussion base and found reference to wrong toggle set in Universal Access System Preference. This was the white-on-black problem and toggling to black-on-white solved it.
Here's the part I don't understand (but like): the machine is much faster than it was. Safari pages load with great speed, apps open faster, etc. It may have been the series of restarts that cleared something, but somewhere in this troubleshooting string things overall got a lot better. Beats me, but like it... YMMV.

I just have some general thoughts. Does it look correct if you connect it to a different monitor? (to find out if the TV / TV connection is the problem) Did you install something in your house that could affect the signal that is being transmitted through the wire? (I highly doubt it) Are you SURE you didn't install / update / change any settings before it stopped working?
The problem you described reminds me a little of the glitchy GTK problems I was having with my Radeon. My problem ended up being related to the open source driver and KMS. Is there another driver or video card you could try? Is your video card getting too hot?

Dual Display Problems - No Signal After Sleep

So, I just set up my hexacore Mac Pro with stock ram and the ATi 5870. To go along with it, I purchased two Dell U2311H monitors from Dell so that I could finally have dual displays. I then purchased two 6' minidisplayport to displayport cables from Monoprice. Also went with the Apple wireless keyboard and Magic Mouse.
Upon initial start-up, everything worked fine. The monitors needed to be calibrated, but dual display mode worked perfectly without any extra steps. I had some fun messing around for a little bit and then decided to take a break. I put the computer to sleep.
I came back 15 minutes later (couldn't stay away for long), and clicked the mouse to wake the computer back up. I heard the tower humming, but the monitors stayed black. I tapped the keyboard. Still black. Assuming it was some issue I wasn't prepared for with the wireless peripherals, I futzed around with them for a while and had no luck. Still not image on the monitors. I turned the monitors off and then back on only to get an error message explaining that the monitor was in Power Save mode. Some further exploration revealed that the monitors were allegedly getting NO SIGNAL from the computer.
Restarting didn't help any. The only thing that has "worked" is shutting down the computer and connecting a single monitor through the DVI-D cable that came with it. I can then reconnect the displayport cable and switch the input to re-establish dual displays, but this is obviously pretty annoying. It seems like I can eliminate questions with the monitors themselves or the cables. In doing some research, I've found some threads on different sites about people having similar dual display issues attributed to faulty graphics cards. I certainly hope this isn't the case, but I'm at a loss for what the problem might be. It seems odd that dual displays would work briefly only to fail after going to sleep for 15 minutes.
Sorry if this is the dumbest question ever. Is there something stupid that I'm doing wrong? Anyone have any insight?
Any guidance you guys can provide would be greatly appreciated. Thanks in advance!

I have the exact same issue. Here's the forum I've got going: http://discussions.apple.com/thread.jspa?threadID=2686085&tstart=90
I called AppleCare because this issue was out of the box. Engineering wanted to capture some logger information so I ran the logger and sent it off to them.
I am running a Dell 27" via a DisplayPort to Mini-DisplayPort cable (also purchased through Monoprice) and a Dell 22" via DVI to DVI (have also tried with the DVI to DVI cable connected to an Apple DVI-MiniDisplayPort adapter and the same issue arrises). When I boot the computer with any of these cables, I get no video. Only when I boot with a Dual-Link DVI (DVI-D) cable from the 27" monitor do I get any video on screen. At this point, I can then plug in the DisplayPort to Mini-DisplayPort cable and the regular DVI (not Dual-Link) after unplugging the DVI-D cable and I get video. If I restart the computer, no problem. However, if the computer goes to sleep or if I power down and then power back up, I am back to square one with no video and have to resort to using the Dual-Link DVI cable.
Because this was DOA out of the box, they ended up just RMA'ing the machine and re-ordering my CTO Mac Pro 6-core. Still waiting for it to be built, I'll let you know how it goes on the second machine when it arrives.

MSI GX600 display problems

Hello! I have a MSI GX600P notebook with an NVIDIA GeForce 8600M VGA card in it. If I install any NVIDIA driver to the OS, the display shows little green squares on the lighter areas. I attached a picture on which you can see what am I talking about.
http://img242.imageshack.us/i/dscn6767.jpg/
Please help me with this problem.
Thank you for your help,
kilix

Install 32bit XP or Vista and use drivers from MSI web:
http://eu.msi.com/index.php?func=downloaddetail&type=driver&maincat_no=135&prod_no=1307
It should works fine there for sure, if problem persist there too, then something is wrong with the VGA

MSI GTX580 Twin Frozr II OC Edition; Battlefield 3 green squares artifact crash.

Greetings respected moderators!
I came to your forum because I seek your help. Allow me to explain my problem. Today when I've played Battlefield 3 after a while my game crashed - it froze in place. The screen displayed small green square artifacts all over the screen. I had to force shut down the game with task manager in order to resume using my computer. I've restarted my game and continued playing it until it happened two more times in a short amount of time. Then I've decided to look into it.
This is what my screen looked liked, although this image is not mine. I'm only using it as a reference.
The most interesting thing is that I've only had this happen to me(exactly the same type of crash) once or twice in the past when I still had the old drivers. Back then I was using High video settings in my game. About a week or so ago I formatted my computer and installed the latest NVIDIA drivers - 310.90. This time I was using the lowest video settings in my game. Yet the game crashed more than it did with the higher settings. This puzzles me...
I did some research on the internet and what I've found out is that this type of crash is very commonly associated with GTX 580. Users with the same problems posted on many forums and the replies they got were all sorts of possible reasons why this crash occurs. One of them is being overheating. I've tested that and ran my game the fourth time after my third crash, and the temperatures of the GPU didn't go over 70°C. Then I've also did a stress test with MSI Kombustor and the temperature stayed under 70°C. So I believe I can exclude overheating.
The next very common thing that users wrote was that the GTX 580's core voltage was set too low by factory default, causing this type of crash with DirectX 11 games while playing them. By manually increasing the voltage it seemed that it was the most common fix for the problem. According to MSI Afterburner my core voltage is 1025 and people on the forums suggested raising it to 1100, therefore fixing their crashing.
Third thing that I've read was that this is caused by the latest 310.90 drivers. Some users with the problems reverted to the old drivers and the crashing stopped, while it didn't fix it for others.
Now my questions is: Why did my game start crashing all of a suddenly, in such way on lowest video settings and so frequently, when I could play it for months on end with higher settings without a single crash?
I do not want to overclock my GPU and unfortunately I do not remember which were the NVIDIA drivers I was using before I formatted my computer.
I thank you in advance, wise moderators of this forum and hope that you will be able to help me.
Have a wonderful day!

Good day to you Svet!
Like I've wrote before, the only changes I did to my computer were the updates that came with Live Update 5. I only installed driver updates through that. I did it regularly ever since I've got my computer 7 months ago. Back in those 7 months the crash only happened once or twice.
Then a week ago I formatted my computer completely, reinstalled Windows 7 and also applied all of the available updates that came with Live Update 5. I've also downloaded the latest NVIDIA GPU drivers. The game worked flawlessly for the whole week until it started crashing yesterday.
Also I had no idea that the overheating could start at under 70°C, especially because I have two extra fans installed, one in the front and one in the back of my case so that there is regular flow of cold air, which enters in the front and exits at the back.

Windows 7 64 bit on iMac display problems and instability

I received my iMac 27" quad core with 8 gig ram & 2 x 1 TB hard drives last Friday. I'm using Boot Camp to run windows 7 64 bit on maximum 2560 x 1440 screen resolution.
I get intermittent but often display problems in windows 7. I get areas of the screen covered in little yellow dots or blue squares (never red artefacts.) This will happen at random areas of the screen, inside an open window, around borders of windows and so on. Most often the screen will go black and come back with a message in the bottom right corner of the screen saying 'Display driver has stopped responding and has recovered' with the sub message saying 'display driver ATI radeon family stopped....etc'. Sometimes I lose the screen wallpaper. Once I've had the system just shut down, once I've had Photoshop seize up and I had to do a cold reboot. Could this be an overheating problem or resolution too high problem or driver problem? Windows 7 tells me my drivers are up to date. I tried installing the drivers for the card from ATI's website which made no difference
The reason I bought a Mac is because it's the only effective way to code for the Mac family of OS's in XCode. The reason I didn't just attach a miniMac to my PC monitor was because there's rather a lot of advertising by Apple about the fact that you can use a Mac with a PC OS via Apple's own Boot Camp. Now I have a lot of Windows software (some of which is not available for the Mac or requires buying again) sitting on an unstable system. Any ideas would be much appreciated...

Sorry, that thread got moved for edit and as a user tip... which I didn't want and won't be doing....
Here is the post:
A tip and workaround for how to get ATI mobility/laptop drivers so that Windows no longer thinks the ATI is a desktop card:
http://discussions.apple.com/thread.jspa?messageID=11286987
Summary (my own edit steps):
1. Install Boot Camp 3.0 and upgrade to 3.1
2. Uninstall graphic drivers and run Driver Sweeper
http://www.guru3d.com/category/driversweeper/
instead of:
removing the crashing driver by going into windows 7 setup via its install cd and deleting the ati driver manaully
3. Install ATI Mobility (link)
4. Uninstall ATI (Programs control panel?) Device Manager (rollback; uninstall?)
5. Device Nanager: update driver and BROWSE BACK to 8.681 (the original apple driver that was causing freezes and purple artifacts) - navigate to /Apple/Drivers/ATI
(Apple uses) a 4850 card in the iMac, its modified a bit for apple. Enough that desktop drivers don't work, and modded-for-laptop desktop drivers don't work either.
Now the upshot of using modified drivers is that it FORCES the catalyst control panel to be installed, meaning you get a few more options to mess around with the card.
I couldn't use the original apple drive, it locks up, the newer one had banding, the newer radeon drivers direct form ATI wouldn't work until they were modded and then they cause black screens.
SO the solution, as obscure as it was, was to download ACTUAL mobility Radeon drivers - version 10.3 still, but made for laptops.
http://support.amd.com/us/gpudownload/Pages/index.aspx
THESE drivers I was able to install - and here is where things changed.
THIS driver changed they way windows saw the video card in device manager.
As I mentioned before, its NOT a desktop card, its a modified laptop card, but installing mac drivers makes windows THINK its a full desktop card, and running the original 8.681 driver crashed it.
Once installed 10.3 LAPTOP driver it now appeared in device manager as a MOBILITY card.
+These Steps "should" work:+
delete ATI driver manually
reinstall apple driver after that and see if that works,
otherwise try the steps above
(mod drivers, remove via windows recovery off setup disk, install laptop drivers, reinstall apple driver over it)

Display problem, and maybe worse

On startup this morning my iMac (PowerPC) G5 display began behaving very strangely. The screen is displaying my usual desktop picture, dock and icons, and finder window. Applications are running, but very oddly.
The screen is covered in small visible dots, some flashing, some static. When I open a document, or a page in Safari, it displays more or less normally (I can use Word, for example), by then "smears" if I start to scroll down the page. At other times the graphics break up completely.
I'm guessing this is a display problem, but one other odd symptom is that sometimes if I click on a file in the Finder window, instead of opening the document the window shuts down and re-opens in its starting configuration.
I tried a restart, but it stuck on a black screen, and I had to force it to stop via holding the start button, and start again from there. I tried accessing system profiler, and it all froze up, requiring another button stop / start.
It looks like a hardware issue, but I've no idea what kind. Anybody recognise what is happening? (I'm posting this from my iBook).
Kenny

Since the update 10.9.4:
My soundcard is missing and on Safari 7.0.5 video artefacts and flickering.
On macbook Pro 13 Early 2011

Display problem T520

I have a T520 4239CTO. Win 7pro. I'm having a display problem. There's a 1 cm grey line 2/3rd down the screen. The image is split--part of the top display is at the bottom. The color on the screen rotates between orange, red, blue, green, etc.
I use the Lenovo update so my drivers, etc are up to date.
How do I figure out what is wrong? I'm currently using a 9-in portable monitor so I can use the laptop on the road.
I've run some of the basic Lenovo diagnostics but it doesn't seem to find anything wrong. Perhaps I'm not using the diagnostic software correctly.
Any ideas? Thanks

Explanation here.
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T420-T520-External-screen-blank-during-boot...
Workaround here.
http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W520-won-t-boot-to-external-monitor/td-p/75511...
*Non Lenovo employee*
I have a Y2P (i5) ... Feel free to ping me if you want me to test some applications with your Y2P if you have the same model. I don't mind keep doing recovery on it if needed .... =)

Display problem - blue tinge, low res

My first gen 20" intel imac has an odd display problem.
The screen has a light blue tinge to it which show up particularly clearly in finder windows which i have set to display white. I've played around with brightness/contrast settings as well as colour calibration but to no avail.
This problem started a few months ago when it would periodically flick between being normal and this blue tinge. For the last few weeks the blue tinge is all I get.
The other symptom seems to be a reduction in resolution in 'blue tinge mode' which is particularly noticeable when watching movies.
Does anyone out there have any ideas?

does this problem occur on external screen?
Regards,
Jin Li
May this year, be the year of 'DO'!
I am a volunteer, and not a paid staff of Lenovo or Microsoft

IBook G4 Display Problem

I am having a display problem that looks exactly like the video link below:
https://www.youtube.com/watch?v=oFzfdq3xMrI
What could be the cause of the problem?
Some possibilities:
If the display cable, how can this be replaced without taking the whole thing apart - is there a simpler way?
If a video card heatsink problem, is this an easy fix?
Many Thanks.

This appears to be a continuation of an issue you noted in September, as the
display had some problems then and after trying a few things, it seemed to be
stable at the time.
Perhaps the components involved with the iBook then are behind this problem.
Does not seem any easy path could be available to fix the problem, since the
parts most likely to be affecting or contributing to the symptom are deep enough
into the computer to require tedious disassembly effort. And odd screw locations.
Looking into the iFixit guide for iBook G4 12" 800MHz to 1.2GHz series build:
https://www.ifixit.com/Device/iBook_G4_12%22_800_MHz-1.2_GHz these
items may be weak or failing: the inverter, inverter/airport cables, and there
may be an indirect issue with the data display cable as they get bent & can
fail. The rolling & flickering image may be the inverter, but there are a few
components that essentially are not replaceable on the logic board that can
be the cause of display failure when these other items have not failed.
And a failing graphic processor or overheating may be contributory causes to
the symptoms. A complete diagnostic test, probably beyond most AASPs interest
may be required to troubleshoot the device accurately. So many don't want to fix
the older hardware, perhaps they're fearful of someone not willing to pay a lot to
have an older machine repaired. Hard to say...
You may need to enlist the aid of a specialist who restores and refurbishes
Apple portable computers and who has sufficient facilities to repair almost
everything in most any of these computer models... wegenermedia.com.
Since they have devised methods to fix these correctly & more efficiently
that may be a way to go. To call them &/or email after looking at their web
site can be helpful to discuss the matter and their processes of repair, etc.
Sorry to not be of much help, but in the process of locating correct service
and repair, you may also consider obtaining a second iBook or something
that can run the software of that vintage, to extend the usefulness of it.
Good luck & happy computing!

How to solve the image display problem in the iTunes Store

Hi guys!
I just want to give a work-around for all of you having the image display problem in the iTunes Store. In my case only the square images in the slider sections won't load:
I had this in my last W7-installation and got it again in W8 after the first few weeks.
There are a lot of reports about this problem out there and adhoc solutions like 'clear the cache' or 'reinstall and drink ice tea' that do not work. It is obviously a file request error. It is all about finding out which server addresses get blocked by your computer.
Solution: Go to your firewall and your Anti-virus-program. There must be a whitelist option. In Kaspersky, check the web-options, the banner-options and the firewall-options, because the all have whitelists. The following addresses have to be whitelisted:
*.apple
*.mzstatic.apple.com.akadns.net
*.mzstatic.com.edgesuite.net
*.da1.akamai.net
*.itunes.apple.com
se.itunes.apple.com
upp.itunes.apple.com
ax.init.itunes.apple.com
xp.apple.com
*.mzstatic.com
client-api.itunes.apple.com
www.apple.com.edgekey.net
www.isg-apple.com.akadns.net
Press Ctrl + R in the iTunes Shop then and browse throught the music sections. All images should be displayed correctly now.
If not, there might be more Apple servers involved in your case. You can find them by running a DNS sniffing tool like the DNS query sniffer by Nirsoft or Wireshark.

Phone restarting randomly could be loose battery. Tighten by putting a small strip of electrical tape on the back edge.
THE BITTERNESS OF POOR QUALITY, LINGERS LONG AFTER THE CHEAPNESS OF PRICE, IS SOON FORGOTTEN.

MacBook Pro and Cintiq 12UX display problems?

Hi,  
I'm not sure if this is the right place to post this so I'm sorry if it isn't - this is just the only place I could think of to ask about a display problem?
I’ve just got the new model Cintiq 21UX, and I’m running it off one of the newer model MacBook Pro’s (using Apples adapter to connect the two).
Everything seems to be working fine, although on the Cintiq’s screen I get flickering green pixels in darker areas of the screen? The confusing thing is it doesn’t happen all the time, it just seems to be the one particular ‘shade’ of dark grey/dark tones it happens on - an example is if I move an image around then its the same area of colour it has problems with across the screen, or if I zoom in the effected area gets bigger etc. I can also edit the colour to a slightly different shade and the problem stops so it can’t be a dead/frozen pixel. If I turn on the mirror display option it is still only the Cintiq display that is effected.
I currently run the MacBook using the Nvidia 9600M GT, I did try switching to the 9400M but it made the situation a lot worse and caused green pixels lines to flash horizontally across the screen.
I can save the image or drag the window that the problems happening on and drag it back to the MacBooks’ screen and there is no problem with the pixels there - it’s only on the Cintiq display.
I was just wondering if this is either a fault with the Cintiq tablet itself, or possibly a problem with the MacBook?
If it’s useful the spec of the MacBook is: 
Late 2008 unibody 15.4”
Mac OS X v10.6.3 Snow Leopard
2.8 GHz Intel Core 2 Duo
4 GB 1067 MHz DDR3
Nvidia GeForce 9600M GT & 9400M
I’m not sure what other spec would be of use but if theres more I can let you know.
Any help would be appreciated, as it works fine other than this occational green flicker, and it’ll cost me a lot to send of either the Cintiq or the MacBook off for a service or replacement in the UK?
Cheers!

It could just be bad. Do you have another computer to try it with?

Graphics display problems (dialog boxes) Lenovo G50 AMD A6 Win 8.1

Graphics display problems Lenovo G50 AMD A6 Win 8.1 Greetings to all. After having spent a number of days trying to find a solution to a display problem, I turn to this forum for help. I own a Lenovo G50 AMD A6 Win 8.1 ever since November 2014, and have had display problems ever since the first day, be it while using internet (Firefox or Explorer) or various software (Text editors, etc.). Many dialog boxes, including colour settings and controls (open, close etc.) either have an inappropriate appearance or even do not appear at all! I manage to "click" on the right places using memory: most areas are INVISIBLE! Another example would be that I do not see any backround colour or image on most webpages such as this one).  Some suggestions included checking for graphics updates (but the drivers used were already up-to-date).  I 'd be most obliged for any new suggestions. Thank you very much. George

Greetings to all, I finally decided to express my utmost discontent with- the Lenovo G50-45 I bought before Christmas 2014,- the summary response with inappropriate links that I received after exposing my problem- the fact that I tried to dowload the following graphics driver  (Beema) AMD Driver (VGA, HDAudio, SATA) for Windows 8.1 (64-bit)
exe
526 MB
Windows 8.1 (64-bit)
VGA V14.502.1002.1002-Logo'd_HDAudio v9.0.0.9905_SATA v1.3.1.220;VGA v13.302.1601.1001_HDAudio v9.0.0.9905_SATA v1.3.1.220
3/19/2015from here(http://support.lenovo.com/fr/fr/products/laptops-and-netbooks/lenovo-g-series-laptops/g50-45-notebook-lenovo/downloads/DS100174), and after REFUSING to accept cookies and some "Lenovo Service Bridge", finally managed to obtain something HERE(http://www.notebookcheck.net/Lenovo-IdeaPad-G50-45-Notebook-Review-Update.125641.0.html).  I find it quite disrespectful to NOT provide customers with EASY support, as well as avoiding to answer their requests for further help when some simplistic "assistance" that one can find almost anywhere on the web leads to no further solution. I shall not repeat the problems I have faced till now: vide supra. The problem, however, is NOT just with browsers.I simply cannot see any dialog box content and colour in MANY software programs, such as OPEN OFFICE; for instance: PRESENTATION colour dialog boxes show BLANK squares instead of squares filled with different colours. This has occured AVER SINCE DAY ONE! Finally, a new bug has appeared: Windows 8.1 keeps popping up some email program to which I am invited to register - I never created a Windows email account, and certainly don't intend to do so.NOR shall I accept some "Lenovo Service Bridge", however "discreet and inoffensive" it might be. I don't know if there are any legal grounds for customers to complain for all these problems. I DO know, however, that I shall NEVER buy a LENOVO device ever again. The pricing and processor might be competitive => yet, the support that ensues is, as far as I'm concerned, LAMENTABLE. To make a presentation, I have to switch to a Samsung R20 using XP..... What is the meaning of all this? George

Odd green squares display problem

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