Apple made a new update available today for the 27″ iMacs. Hopefully this will solve the whole screen flickering issue. It’s a firmware update to the ATI HD graphic cards.
Updates the graphics firmware on ATI Radeon HD 4670 and 4850 graphics cards to address issues that may cause image corruption or display flickering.
I have already [...]
I am starting to get weird video issues on my new 27″ iMac. It’s the Core2Duo model, not the i5 so I don’t believe it’s a processor issue. Mine has the ATI Radeon 4670 in it. Currently, the only was to fix it when the screen goes bonkers is to reboot or wait long enough [...]