Intel Graphics - Lags and glitches since linux 3.6?

Question

Hi there,
since the upgrade which included the linux-3.6 package (among others, unfourtunately I have no idea which packages were upgraded exactly, only downgrading the kernel was no fix), I experience graphical glitches when I use my laptop. There's a Ivy Bridge graphics chip in it and I use the intel driver together with SNA. When I boot up the computer it says
drm:__gen6_gt_force_wake_mt_get] *ERROR* Force wake wait timed out
and I can find this in my journal from time to time
Oct 20 21:14:35 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 20 21:14:35 marco-thinkpad kernel: [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
Oct 20 21:14:41 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 20 21:14:47 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 20 21:14:53 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 20 21:14:59 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 20 21:15:05 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 20 21:15:11 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
Oct 20 21:15:17 marco-thinkpad kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
The i915_error_state file is very big, so I had to xz and upload it: http://www30.zippyshare.com/v/33532322/file.html
Additionally, everything just feels slow somehow, for example KDE's Expose effect gives me approximately 5-6fps while it was perfectly smooth before.
Here is an example of how the graphical glitches look like: http://www.abload.de/img/intelbug1yostj.png
I hope there's someone here who can help me Thank you very much in advance!

Answer 1

kicka wrote:
xf86-video-intel                   to               2.20.9-1
xf86-input-evdev                 to               2.7.2.1
xorg-server                         to              1.12.4.1
xorg-server-common           to              1.12.4.1
I downgraded using the aur package https://aur.archlinux.org/packages.php?ID=31937, and put in /etc/pacman.conf
IgnorePkg = xorg-server xorg-server-common xf86-video-intel xf86-input-evdev
I experienced the same behaviour - GPU hung. However, I have only encountered it playing Team Fortress 2 using wine and bumblebee. Strange, because the game runs on nvidia card. I had to kill hl2.exe, and restart the game.
Today, I did exactly what you said, and so far, after 2 hours of gameplay just one crash, but most propably unrelated to the intel GPU. Has anyone opened of found a bug report related to that problem? Downgrading is only a short-term solution.
About performance regressions, I haven't experienced any using the system normally (but cairo-compmgr isn't heavy for a gpu). On the other hand, Team Fortress 2 has bigger fps drops than before, but that might be my subjective feeling.