Ubuntu
linux package

  1. Bug #1140716
  2. Comment #58

Comment 58 for bug 1140716

Revision history for this message
Aymeric (mulx) wrote : Re: [regression] 3.5.0-26-generic GPU hangs

At work we have computers running Ubuntu 12.04 with kernel 3.2.0-29 and 12.10 with kernel 3.5.0-26.
All computers are now getting random bug with unity or even with unity-2d or gnome-panel, since we started upgrading kernel the 20 March (kernel 3.2.0-29 was installed at this date).

By merging/sorting changelog of both kernel I found 5 changes applied to both kernel, so regression was probably introduced by one of them.

  * drm/i915: Disable AsyncFlip performance optimisations
    - LP: #1117693
  * drm/i915: dump UTS_RELEASE into the error_state
    - LP: #1117693
  * drm/i915: GFX_MODE Flush TLB Invalidate Mode must be '1' for scanline waits
    - LP: #1117693
  * drm/i915: Implement WaDisableHiZPlanesWhenMSAAEnabled
    - LP: #1117693
  * drm/i915: Invalidate the relocation presumed_offsets along the slow path
    - LP: #1117693

On all of your computer simply running glxgears make the GPU Hung occur instantly with affected kernel.