After system is started all is ok. But if to leave a machine and wait till display turns off, after that trying to awake it gives nothing. Display stays black. And only switching to any of VTs and turning back to VT7 makes display awaken causing the image appearing. But 2D rendering becomes sluggish. Also in dmesg I found next messages:
[ 143.476015] [drm] GPU HANG: ecode 2:-1:0x00000000, reason: Command parser error, iir 0x00008040, action: continue
[ 143.476015] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 143.476015] i915: render error detected, EIR: 0x00000010
[ 143.482472] [drm] GPU HANG: ecode 2:-1:0x00000000, reason: Command parser error, iir 0x00008000, action: continue
[ 143.482472] i915: render error detected, EIR: 0x00000010
Also I tried drm-intel-nightly but it didn't helped: GPU HANG also appeared after display was turned off.
Saved error dump, dmesg, Xorg.0.log, please, see in attachment.
Some additional info:
Xubuntu 14.04 LTS x86_64
Linux: 3.13.0-39 / 3.18RC5 / drm-intel-nightly
Created attachment 109853 [details]
Created attachment 109854 [details]
Created attachment 109855 [details]
Recently tried linux 3.13.0-40 with
from oibaf ppa. The same issue.
If some any additional info needed, please, ask.
Also on latest kernels (3.17-3.18) with MESA 10.5git my desktop looks bad: http://www.zimagez.com/zimage/screenshot-181214-163540.php
Timeout, closing. We seem to have neglected this bug. Apologies. Please reopen if the problem persists with latest kernels.