Is my Mac's video card about to die?
January 3, 2011 4:43 AM Subscribe
Text on my Mac pro's monitor is behaving oddly, with intermittent horizontal bars of static across the lines of text. I think it might be the video card. Is it about to die?
posted by Joe in Australia to computers & internet (8 answers total) 1 user marked this as a favorite
The windows on my main monitor are occasionally interrupted by horizontal bars of static across the text (I don't think pictures are affected). The bars start and end at the edges of the affected window and they stay on their row of text as I scroll the contents of the window up and down. The bars move with the window if I move it around, but they go away if I move the window onto a different monitor and - bizarrely - don't reappear until the window has re-entered the main monitor by more than about a third of its width. Making the window more narrow seems to help too.
I'm using a Mac Pro 1.1 running OS X 10.5.8. I have two monitors. The one which has the problems (I haven't seen the problem on the other one) is a Dell U3011. Both monitors are driven by an ATI Radeon HD 4870. I've tried rebooting and clearing caches. Can I try anything else to fix the problem, and should I replace the video card pre-emptively?