Flickering Green pixels everywhere!

I have a dual monitor set-up and on the main monitor I use the "Earth" desktop picture and two days ago I thought, "cool, my mac knows when it's Christmas and it's put twinkling green stars all over my screen..".
Then I realized that those twinkling stars are green pixels flickering everywhere. At first I thought it was my LG WTQ226 monitor going on the fritz. So I tried it on another Mac and no stars. Then I realized that I have green pixels on the second monitor, an old NEC vga that still works perfectly. Hmmm... this is weird! Some, not all, of the stars disappear when I pass my cursor over them, but they come back in random clusters in other spots.
Other things I tried:
-Booting from a cloned version of Leopard 10.52
-Resetting SMC
-Swapping DVI cables
Finally I phoned Apple and asked them to send me another HD 2600XT video card to test out.
Anyone have the same issue? Was it the video card?

The problems with the GF7300 started with the 10.5.2 updates.
I dont know what exactly goes in trouble, but with the 10.5.5 update
my screen freezs very often.
I checked the things users told here in the forum
-clean install (normal - cobo - TM restore)
-fresh install with fresh user
-pram reset
-clean the comp inside
- etc
nothing works.
in "Safe Boot" everything is going normal.
But then i cant use the GL features.
Its not clear what exactly the problem is.
Is it the Firmware - or bad driver - or a core grafic problem?
after all and 3weeks of testing, i ordered the ati because no support from apple,
no applecare an not time to wait.
i hope in future the support will be better.
The HD2600 is fast as the 7300 an works very silent with the fan.

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RMBP External Display Flickering Green Pixels

Hi,
I own a MacBook Pro 2012 with retina display and an LG W2363D (3D) monitor.
I have tried to connect my monitor with Thunderbolt -> DVI cables having 650M enabled. Moreover, I checked for DVI-D and DVI-I as the monitor only supports the former.
However, although the image is displayed on the external monitor I get green pixels flickering on the screen, here is a screenshot http://img19.imageshack.us/img19/2310/cam00042.jpgAlthough I have tried 3 different cables the problem remains the same...
I have also tried different resolutions rather than 1080p. The only way to limit the problem was to lower the resolution so that I could choose a refresh rate more than 60hz however this is not an acceptable solution for such an expensive investment.
What can I do? Is there an nvidia update that I could use?
Thank you very much in advance.

I notice the same with my external EIZO EV233W (DVI) on a mid 2012 non-retina MBP 15".
But strangely enough if I go to screen preferences, change the (external) screen mode to scaled (doesn't matter which mode), then change it back to "Best for screen" (so nothing has changed, since this was the default), the green pixels are gone ..
Kind of a hassle to do this excersise everytime I connect the external monitor, but it reassures me this is not a hardware issue in my case, just annoying.
EDIT: the other input (displayport) on this monitor is permanently connected to my Windows 7(64bit) machine, never had an issue there.
The DVI adapter for the MBP is a third party adapter

Flickering Green pixels all over 21" Apple Cinema Display is getting worse

Has anyone ever had this problem before? I have a 5 year old, not overly used 21" Apple LCD Cinema Display. Just recently, it started having these tiny flickering green dots but only on black fields. Now it is getting worse. I am now having the same problem only this time, additionally, its red on white fields. It goes on and off intermitently. Sometimes, my monitor would just turn GREEN especially after viewing some photos. (I think this monitor was made in Mars or something)
What is causing this problem? Do I need to get a new monitor or can I still have it fixed? Please help.

There seems to be a couple of threads on this issue, including:
http://discussions.apple.com/thread.jspa?threadID=1954716&tstart=0
In my case, the severity of the flicker varies with what is trying to be displayed. In screensaver mode, for example, there is no flicker unless I choose to display photographs. Problem is also quite severe when I'm in Aperture; less so in Safari.
I've had the same problem with two separate graphics cards so it must be the cable or the display.

Green pixels everywhere on my iPhone 4S.

There are green pixels all over my screen (not dead pixels, these move with images). At first it was just whenever I opened the camera but now it's all over the phone, I'm noticing more on where there should be shadows or shading. It's really irritating as I can't really see images or even videos and it just seems to be getting worse. This phone is barely two months old and has had no significant damage. Is there anything I can do to fix this issue?

Hi jodilorraine,
If you are having display image issues with your new iPhone, you may find the Display troubleshooting portion of the following article helpful:
iPhone: Hardware troubleshooting
http://support.apple.com/kb/ts2802
Regards,
- Brenden

Flickering green dots... What's the final answer?

Hi, I jgot in my 30" monitor 2 weeks ago, but ..waited to find on ebay an AGP video card. Spent far more than I should have to get it, and now have flickering green dots everywhere!
The screen is perfect when directly connected to the monitor. When I use a dual link DVI extension I get them. I've changed out the extension and still get them.
I tried all the tricks I could find... blowing out the connectors, taking off of sleep mode, changing number of recent items (I'm not sure what this refers to) from 0 to 10, going into and out of sleep mode, plugging and unplugging, changing resolution and display from 256 - 1000's and millions.....etc.
All in all, something fixed it once! Then they came back.
Frustrating. So... Is there a real answer?
I'd include a photo, but I'm not sure how to add this as an attachment?
I've put a link to my .mac account here:
http://homepage.mac.com/robertlemke/PhotoAlbum3.html
Thanks in advance!
Robert

OK, I think I solved the problem!
The extension I needed was a basic female - female Dual link DVI
Since I needed a male - female, the store sold me a gender converter. I have since bought a dedicated M/F dual link and it's working. I believe that even though I changed out the gender converter twice, it was just not up to carrying the bandwith needed for this type of signal.
The problem is now solved and Altex took back the extension and converter, no questions asked!
I bought the cable through a local mac dealer.
Good luck to all!

Green screen upon startup and green pixels afterwards

Last night I switched from the dining room table to the bedroom. When I turned on my laptop in the bedroom (about 10 minutes after moving) it started up by flashing with a black then green screen and would not load. I was able to finally get it to load but when it first starts up it is a green screen that looks like it has diagonal wavy lines with the verbiage in the lower left for pressing esc for boot setup. Once it loads it has green pixels everywhere and when I open control panel where the white is normally, there is purple color. I did notice that a Windows update happened. I have tried to do a system restore but it doesnt get ride of it. I do have pictures but not sure how to post them from my phone.

Hi!, Netoid: Please, see ... https://support2.microsoft.com/fixit/en-us If didn't not solve your problem, call to HP Support Assistance, from ... http://h30434.www3.hp.com/t5/Android-Tablets-e-g-HP-Slate-7/Phone-Assistance-in-the-world/td-p/5038024

Late 2008 MacBook Pro 17" frozen with pink and green pixels

Hi all,
Hope someone can point me in the right direction with my Macbook Pro problem. I have a late 2008 version of the 17" MacBook Pro. I've been using it today and it's been completely fine. that was up until I was uploading my recent holiday photos to iPhoto. I left it to upload and came to check on it after 5 minutes. I found the program had frozen and pink and green pixels were spotted all over the screen.
I turned the laptop off by the power button. When I started her up again I found the white screen with the pink and green pixels everywhere and apple logo appear. It starting booting and then just stopped. the screen froze and nothing was working. I've tried booting up in safe mode and again it just freezes.
Any advice on this would be greatly appreciated as I'm lost without my computer. I've included a photo I've taken if the frozen screen.
Many Thanks,
Dean.

According to MacBook Pro (Early 2008 and Late 2008) - Technical Specifications you have a model with
NVIDIA GeForce 8600M GT graphics processor with dual-link DVI support and 512MB of GDDR3 memory
Dual display and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 2560 by 1600 pixels on an external display, both at millions of colors
DVI output port
VGA output using included DVI to VGA adapter
Built-in iSight camera
The 8600M GT has several recalls for GPUs, which had a 4-year free repair from date of purchase. It may be too late in your case. You can find the recall notices via internet search if you want to.
You should run the AHT -Using Apple Hardware Test
Please see MacBook Pro: Distorted video or no video issues

Green pixels on boot camp only

Hello
Since some time I have flickering green pixels in my dsiplay when I boot into Windows. In OSX the display is fine. Moreover is not a display issue as my mouse can cover the green pixels.
It seems the green pixels appear as soon as the EFI loads whatever legacy bios it uses to boot windows, so it does not seem to be a windows driver issue.
It is a 2007 iMac, Lion and Windos 7.
Anyone have an idea? Have there been other similar reports? I cant seem to find anything.
BR

Maybe the VRAM is involved, but I have run VRAM checks and it seems ok.

Flashing white/green pixels on external monitor

Hello everyone, I just purchased a 15" MBP with the hi-res antiglare monitor. I upgraded from a black Macbook, which was connected to my 24" Samsung monitor with a Displayport to DVI adapter. When I bought the new MBP, I also bought a new miniDisplayport to DVI adapter. I just now hooked up my MBP with the new adapter to the Samsung monitor and there are/were two issues.
1) When I imported my photos off of my DSLR camera, I noticed green flickering pixels stuck on the images. These pixels moved and flashed with the image, so I know they weren't dead. When viewing those images on my regular 15" MBP monitor, those pixels were not there. They were only on the external monitor. I thought this may be an issue with my DSLR/image import, but then I noticed random purple/green pixel artifacts on an ad on Facebook as well.
2) I reset the NVRAM, flipped the DVI cord out and around, and reconnected it. Now, the green pixels do not seem to show up BUT there are now tons of tiny white pixels flashing across my entire screen. I disconnected/reconnected the display connector several times, and I was able to recreate #1 once. I haven't bena able to again.
I reconnected my old Macbook with the old adapter to the monitor and there were none of these issues.
What might be the problem? I can't capture the pixelation effect on screen capture.
I'm thinking its either:
An issue of Mountain Lion
My Macbook Pro's software
My Macbook Pro's hardware
The miniDisplayport adapter.
Thanks,
-Max

Having the exact same issue. I'm getting the problem on my LG Flatron E2742 external display, from a Thunderbolt to HDMI out from my 2012 MacBook Pro running Mountain Lion.
The issue began yesterday when I connected my MBP to a HDMI Projector. I noticed, via the projected image, the beginning of the dancing white/green pixels. What's really weird is that when I connected my MBP back to my standard LG External display, the dancing white pixels were still there!
MAYBE it's something that happeend to my thunderbolt to HDMI cable in the process? Haven't experimented with another cable to confirm this. BUT, something tells me it's actually software related, because when I first plugged in my external display this morning, it began flickering/staticing/spazzing out like CRAZY. After some poking around and forums, I eventually changed my display color profile and it went back to normal, EXCEPT for the dancing white/green pixels.
Any words of wisdom out there about this situation would be much appreciated.

How To Prevent My Laptop's Screen From Succumbing To Evil Green Pixels?

Hello, I know this seems to be a common problem on the forums but... A while ago my display started showing evil bright green pixels that created a distracting and unsightly mess. It was under apple care. I waited to see if an update would fix it, and before my apple care ran out I took it in and had it fixed. Could it be that I could know what they saw wrong with it? Because I got the computer back, fixed, and they didn't tell me what had been the problem. Is this available on the Internet? Two weeks later I started getting the EXACT same problem. Even though apple care repairs are under warranty the apple genius I talked to told me they would charge to fix it, fix it again, because I had dinged the top of the laptop. This really peeved me. The good news is that it's not always like this, and most of the time now the display is fine. The bad news is that I've been getting the problem more and more frequently, which is exactly what happened last time until the evil green pixels never went away. So the problem flickers, but it's happening more often...
My question is does anybody know anything I could do to prevent this from occurring? Of note is that last time this happened it didn't cure it completely but it helped to diminish my screen resolution. The most recent time the green pixels came back though and it didn't matter the resolution. Does anybody know if this is a hardware or a software problem? Could the fact that it comes and goes, and eventually never leaves, mean that I am causing it to happen without knowing it? Does anybody know if this is a software or a hardware issue? I am going to run the apple hardware test and soon as I can, although I think last time I did that it was fine but I will double-check. I don't want to pay apple to fix it if it will break again. I am prepared to face the harsh reality of a world with a distorted but functional laptop screen. Thanks for reading!
Message was edited by: sumnerfs

Oh, one of my loveliest topics. ;)
The best way to clean a lcd screen is to take a lcd cleaning spray and a cloth. But thats not all, the secret is to take a microfiber cloth to clean the screen up.
Perform the cleanup in these steps:
1. Spray the Display Cleaner on the whole screen. Be generous when spraying the cleaner on it.
2. Dont use the microfiber cloth for the first cleanup, thats the step where you remove the big dirt. Use a ordinary cloth.
3. Ok, rubb the screen dry, it doesnt matter if some stripes are left, thats OK.
4. Now, spray the cleaner again on the whole screen, but not much, it should only cover the surface of the screen.
5. Take microfiber cloth and clean the screen how you would clean a window. E.g. from top to down but dont stay at one point, just go top down.
6. I know its not perfectly (good if yes ;) ) but I tried it many times and everyone has its own technique.
Good luck and a clean display :)
Greets

Why is there green pixels via DVI but not VGA

MacBook Pro
15-inch, Mid 2009
2.66 GHz Intel Core 2 Duo
8GB 1076 MHz DDR3
NVIDIA GeForce 9600M GT 256 MB
OSX Lion 10.7.5
Exernal Monitor: Samsung SyncMaster PX2370 (new)
When I use my Mini Displayport to VGA adapter with a VGA to DVI cable my external monitor displays a normal picture, no problems. When I use my Mini Displayport to DVI adapter with a DVI to DVI cable the external monitor displays a high res picture but is covered with green flickering pixels and sometimes white horizontal flickering. I have tried every resolution in the apple prefs, tried changing external monitor settings and I have also tried various adjustments with SwitchResX. I'm still getting the green pixels, etc and im out of ideas.... has anyone had/solved this problem?

signal static in either the cable, cable connectors, or in signal thru the DVI adapt./ cable.
"Mini Displayport to DVI adapter with a DVI to DVI cable"
excessive connector static points.
Elminating variables as per your above, your "DVI adapter with a DVI to DVI cable" is the source of the static.
Use another and eliminate the variable or dont use same.

30" with edge effects, green pixels?

Just installed first 30" display on Geforce 6800 DDL in my G5. All windows have a blue edge effect (left side usually) and green pixel fringing on the right and within many objects, icons, text.
Is this a symptom of a bad LCD?
I have a picture, not sure how to include in a post.
Dual G5; FCP Studio 5 + Mac OS X (10.4.7) JVC SR-GS30 deck, DVX-100a

I bought the original 17" MacBook Pro with a 30" Cinema and had the green/blue pixel issue right away. Seemed to only come after the display went to sleep. I brought it back to the Apple Store and they told me it was a bad graphics card and replaced the MacBook Pro. I took it home and the problem was still there. Next they replaced the 30" display. I took that home and had the same problem. I took in both the display and MacBook Pro and they couldn't reproduce the problem using their Cinema Display. The Genius told me it must be an interference issue and to try using the combination in a different place. I moved both to the other end of the house and had the same problem. Next they told me to try a power line conditioner. I bought a 1500VA backup and the problem was still there. Then I noticed that it only showed up when my laptop was closed (I thought I was supposed to be able to do that). I left it open from then on and all was well. Then I upgraded to the Core 2 Duo and got a different problem. Now instead of blue and green pixels, I get a snowy blue pixel dots and lines jumping all over the dark areas of the screen. I can change the desktop picture and it only effects the black or nearly black areas. Watching a DVD is painful - blue static everywhere.
I find it interesting that two different computers with the same video card and the same monitor have similar, but not identical problems. I found a fix in leaving my lid open last time, but I haven't found a fix for the Core 2 Duo. Anyone?

Green pixels on external monitor with MBA coming up from sleep?

Has anyone else experienced green pixels on external monitor with MBA coming up from sleep? I can get rid of these pixels either restarting MBA or switch off the monitor for a five secs and then switch it back on. These pixels do not show up within screenshots.. or neither on MBA own screen but they do reappear on external monitor (used with mini DP-DVI-adapter) after every sleep cycle.
http://ssh.nbl.fi/~nbl4264/gp/ (few pics where these green pixels appear on)

I have the same issue with my new macbook.
When i wake the computer from a partial sleep the screen flickers and i get line distortion through the image.
If i put the machine to sleep unplug the mini dvi adapter and replug it in and wake the computer up the problem disappears.
The issue is also intermittent doing about 3 times out of every 10 wake ups...
If anyone has any suggestions it would be great, I a using a new Dell 2208WFP monitor.

When i open my computer I get the white screen with apple symbol and there are vertical lines all over the screen with green pixels and after a few minutes the screen gets grey and I get message to restart my computer what happens

3 years ago I bought an IMac Desktop that I am using for a lot of things but the most important for dvd montage in Imovies and Idvd.
Now today when I opened my computer I get as usual the white screen with the Apple symbol but there were all over the screen vertical lines with green pixels and after a while the screen gets grey and I get message to restart my computer using the power button or the restart button and when I do so each time the same is happening somebody can tell me what is happening and what caused this. This computer is my work and now I have no income anymore.
On the Apple support site they are asking to enter the serial number and when I do so I get message it is wrong but it is the only one I have and I buy this computer in Cairo Egypt. I am living in Hurghada in Egypt for the moment. When I call the technical support of the shop where I buy it they are telling me that it is the hard disk or ram and that I probably lost everything on it and they are asking a big amount to repair.
Can somebody advise me on this matter. Thanks in advance

You can find the serial number either in About this Mc in the Menu bar under the , or it should be on a sticker under the foot of the machine.
If you have the install discs, try booting from them, holding down the c key and then using Disk Utility to check the drive.
You can also boot into Safe mode
To start up into Safe Mode (to "Safe Boot"), do this:
   1. Be sure the computer is shut down.
   2. Press the power button.
   3. Immediately after you hear the startup tone, press and hold the Shift key.
      Tip: The Shift key should be held as soon as possible after the startup tone but not before.
   4. Release the Shift key when you see the gray Apple and progress indicator (looks like a spinning gear).
During the startup in Mac OS X 10.2 through 10.3.9, you will see "Safe Boot" on the Mac OS X startup screen.
During the startup in Mac OS X 10.4 or later, you will see "Safe Boot" on the login window, which appears even if you normally log in automatically.
Please post back with results,
To leave Safe Mode in any version of Mac OS X, restart the computer normally, without holding any keys during startup.

Late 2011 Macbook Pro green pixels on the screen where dark colors should appear.

I have a late 2011 Macbook Pro I bought it new with 4 gb of ram. About 4 months ago i purchased 8 gb of pny ram for this model and upgraded the ram. I followed all of the safety precautions and discharged my static electricity before upgrading. It increased the speed of my mac and helps with certain tasks. About 2-3 weeks i notices my mac froze and strange green black and pink bars appeared on the screen so i hold the power button to shut it down and it solves the problem this will happen about once a month but otherwise my mac works perfect. Now about a month ago I powered my mac on and low and behold The screen was covered in green pixels. I tried rebooting twice and it didn't do anything then i let it sleep for about 5 mins opened my mac and the green pixels were gone. Now my mac is still usable and everything works its just sometimes like once in a while ill get a few pixels and closing and opening my mac fixes it. I was curious if this was related to one another or is my mac just starting to die....

I have been getting green pixels/boxes the last while...
I have noticed it after waking the machine from sleep. Not 100% sure if that is the only time it happens. It goes away after a few seconds, typically.
Any idea what is going on?

Flickering Green pixels everywhere!

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