Зависает DE, иногда отвисает, иногда намертво, помогает только sudo service lightdm restart, зависает синхронно с этой ошибкой:
pl7ofit@pl7ofit-pc:~$ dmesg | grep drm
[ 8.176196] [drm] Initialized drm 1.1.0 20060810
[ 8.825197] [drm] Memory usable by graphics device = 2048M
[ 8.854003] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[ 8.854004] [drm] Driver supports precise vblank timestamp query.
[ 8.902596] [drm] Wrong MCH_SSKPD value: 0x16040307
[ 8.902599] [drm] This can cause pipe underruns and display issues.
[ 8.902599] [drm] Please upgrade your BIOS to fix this.
[ 8.951730] fbcon: inteldrmfb (fb0) is primary device
[ 9.803466] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 9.806595] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[ 10.861674] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off
[156763.656204] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
[156763.656212] [drm] capturing error event; look for more information in/sys/kernel/debug/dri/0/i915_error_state
Выхлоп /sys/kernel/debug/dri/0/i915_error_state прицепил в файл.
Помогите разобраться вообщем =)