[Intel-gfx] frequent x crashes with gen6/sna

[Daniel Vetter]

On Thu, Oct 13, 2011 at 03:45:22PM +0200, Dieter Mummenschanz wrote:
> hello,
> 
> using latest drm-core-next git from Dave Airlie as well as the latest xf86-video-intel git my system (Sandybridge Mobile (GT2+)) still hangs frequently right before X dies. This happens every time the GPU is under considerable stress, like decoding a va-api stream and running OpenGL apps at the same time.
> syslog records the hang:
> 
> kernel: [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
> kernel: [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state
> kernel: [drm:i915_wait_request] *ERROR* i915_wait_request returns -11 (awaiting 3263296 at 3263293, next 3263297)
> 
> after 3-4 seconds the system resumes normal following the X crash a couple of minutes later:
> kernel: [drm:ironlake_update_pch_refclk] *ERROR* enabling SSC on PCH
> kernel: [drm:ironlake_update_pch_refclk] *ERROR* enabling SSC on PCH
> 
> gpu related module opts are:
> i915.i915_enable_rc6=1 pcie_aspm=force i915.i915_enable_fbc=1 i915.lvds_downclock=1
> 
> at least rc6 enabled is mandatory for me since I ran a mobile gpu.
> 
> any ideas?

We have (unfortunately) still a few outstanding issues. To check whether
yours is new, please attach the full dmesg and the i915_error_state of the
gpu hang.

Thanks, Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48