If I have ForceLowPowerMode set to true in my xorg.conf, the X server crashes immediately. The fan does slow down, so that seems to be working, and the Xorg.0.log shows the low power settings as applying correctly, but I am left with a black screen and am unable to quit X without rebooting the PC.
Created attachment 27488 [details] [review] Xorg.0.log
Cards with multiple GPUs probably require special handling.
Created attachment 27498 [details] [review] don't mess with PCIE lanes on x2 cards It's likely changing the PCIE lanes that's causing the problem on x2 cards. Does this patch help?
Yep, that worked. I also had it crash when going to sleep, probably due to DynamicPM? This was before that patch, would it have been the same issue or should I test it again? I removed all but ForceLowPowerMode for testing.
(In reply to comment #4) > Yep, that worked. I also had it crash when going to sleep, probably due to > DynamicPM? This was before that patch, would it have been the same issue or > should I test it again? I removed all but ForceLowPowerMode for testing. > The hang when the display is blanked is from DynamicPM as it lowers the clocks and pcie lanes when the display is blanked.
committed: 8c03c1fdb5ea35570064946557050c87ca30582a
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.