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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Notebooks > Peculiar Screen Problem: Pixels flashing

Peculiar Screen Problem: Pixels flashing
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Nov 10, 2004, 01:33 AM
 
My screen seems to accumulate problems.... (white spots - but TiBook, more and more dead pixels or stuck pixels) but this one is very strange.

What appears to be happening is that pixels are cycling through Red, Green and Blue. Quite rapidly so it looks like they are flashing. Now for the first while I only noticed it in Safari, but today I could see it in the Finder. It happens around text, and it moves if I move the window - so it's not an acual physical problem, it must be software related?

It happens to the white pixel around the black text, and i can use the zoom feature of Mac OS X and it still sticks around. In fact I just checked it while on a website, and it was even in the text that was blue.

So I Really have no idea what is causing this and it is getting weirder and more annoying. I plan to take the PB in at Christmas to get the screen replaced for the white spots, but if this is software, that wont help. Could it be the graphics card?

Rapid screen shots show no sign of the anomoly.

Any thoughts are appreciated. Thanks.

P.S. Now its happening in my iTunes logo in the Dock
     
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Nov 10, 2004, 03:48 PM
 
If screen shots do not show the problem, then there is a good chance it is your graphics *chip* (not card; there are no graphics cards in Powerbooks). You may need to have that looked at. But it probably won't be good news.

Steve
     
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Nov 10, 2004, 04:36 PM
 
Does the problem persist if you switch your font smoothing preference to "Standard - Best for CRT"? The problem you describe sounds like an error with regards to sub-pixel antialiasing.
     
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Nov 10, 2004, 08:23 PM
 
That antialiasing thing sounds promising, but I can't quite do that at the moment...

Had some network guys looking at my machine in Residence on campus. They thought the network problems were on my computer and insisted they look at it. While, to cut a long story short, while I was waiting when I picked it up I decided to install 10.3.6, maybe that would fix the install problem. The network guy came to my computer, checked a couple things, and then CLOSED the lid. Put it to sleep, mid system install.

Well, needless to say the problems are endless right now (built-in keyboard /tackpad dont work, PMU isnt loading, cant use a network, now it wont boot - FUBAR) Trying to fix, but I will try that pixel setting later.

Thanks for the help. - Adam
     
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Nov 13, 2004, 03:18 AM
 
Originally posted by adamberti:
The network guy came to my computer, checked a couple things, and then CLOSED the lid. Put it to sleep, mid system install.
Complain to the computer services department. LOUDLY!
     
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Nov 13, 2004, 02:41 PM
 
Originally posted by Person Man:
Complain to the computer services department. LOUDLY!
It aint worth it buddy.... People complain all the time, I've spent many hours along with others on a Student Association trying to change residence for the better without much success, It's just not worth the hassle anymore.

The font smoothing appears to have done nothing, nor did a hard drive wipe and re-install. So it must be hardware related. Ran TechTool and Apple Hardware Test, but they find no problems.

On a side note, I bought Rainbow Six:Raven Shield way back when, and it has always been prone to freezing, and I could never figure out why. I just tried again after a fresh install. Maybe a bad graphics card?

So off to the phone I go for AppleCare. Thanks for the suggestions.

[Edit: Raven Shield not Ghost Recon]
     
   
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