updated 12:10 pm EDT, Fri June 27, 2008
MacBook Pro video glitches
Owners of Santa Rosa-based MacBook Pros are suffering from video failures, reports claim. Victims say that the problem arises after waking or rebooting a Pro, at which point the computer may suddenly stop displaying video, whether on its native LCD or an attached monitor. Debugging is said to have revealed that the issue is with misidentified graphics chipsets -- rather than acknowledging their dedicated GeForce 8600M GT cards, Pros may be treating them as integrated X3100 chipsets.
AppleCare is said to be recommending a replacement of a Pro's logic board, but those who have have gone through with the procedure note that the fix may only be temporary, as the display can quickly go blank a second time. User-suggested fixes include firmware and PRAM/NVRAM/PMU resets, deleting Safe Sleep files, or altering memory configurations.
The issue appears to affect only those Pros sold in or around June of last year, but may ignore any variations in hardware, as well as the v1.5.1 EFI firmware update which addressed another video error.