OS: ubuntu 14.04 on a iMac 2008 Video card: ATI Radeon HD 2600 Problem: after a suspend/resume, the graphics are broken (here there is an image: https://onedrive.live.com/redir?resid=F360DB4014F86298!22188&authkey=!AISDvz3fV20MHKI&v=3&ithint=photo%2cjpg) I don't know if is the same problem but when I boot the system I receive this message: radeon 0000:01:00.0: Invalid ROM contents
(In reply to Lorenzo from comment #0) > I don't know if is the same problem but when I boot the system I receive > this message: > radeon 0000:01:00.0: Invalid ROM contents No related. Please attach your xorg log and dmesg output.
Created attachment 116304 [details] Xorg log
Created attachment 116305 [details] dmesg log
Booting in EFI mode I have had this problem occur on an iMac8,1. It also resumes with a white tint on the screen. I have not found a way to get rid of the white tint except rebooting. Booting in BIOS compatibility mode does not exhibit this issue, the graphics resume from suspend properly. I tested this with the 4.2.0 kernel. I have not tried other versions and do not know if this is a regression. I would be happy to test patches, provide debug information, or other additional testing if it would be helpful. I have seen a similar problem on an iMac7,1 and can test on it as well. I am unsure of a good place to dig around to get closer to a solution on this.
(In reply to Jeffery Miller from comment #4) > Booting in BIOS compatibility mode does not exhibit this issue, the graphics > resume from suspend properly. Using the compatibility mode is your best bet. Apple kind of does their own thing with respect to EFI.
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