Ubuntu
linux-lts-quantal package

  1. Precise (12.04)
  2. Bug #1140716
  3. Comment #12

Comment 12 for bug 1140716

Revision history for this message
Torsten Hilbrich (torsten-hilbrich) wrote : Re: [regression] 3.5.0-26-generic CPU hangs

The same here, previous kernel 3.5.0-25-generic works without problems, 3.5.0-26.42 hanged just now:

$ dmesg|grep i915
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=/dev/mapper/System-root ro quiet splash i915.i915_enable_rc6=1 vt.handoff=7
[ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.5.0-26-generic root=/dev/mapper/System-root ro quiet splash i915.i915_enable_rc6=1 vt.handoff=7
[ 1.667363] i915 0000:00:02.0: power state changed by ACPI to D0
[ 1.667367] i915 0000:00:02.0: power state changed by ACPI to D0
[ 1.667652] i915 0000:00:02.0: setting latency timer to 64
[ 1.687950] i915 0000:00:02.0: irq 44 for MSI/MSI-X
[ 2.429882] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[ 330.684154] i915 0000:00:02.0: power state changed by ACPI to D3
[ 331.826825] i915 0000:00:02.0: power state changed by ACPI to D0
[ 331.826829] i915 0000:00:02.0: power state changed by ACPI to D0
[ 331.826830] i915 0000:00:02.0: setting latency timer to 64
[ 1677.075872] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
[ 1677.075876] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state

Content of i915_error_state attached.

Will disable rc6 and test what happens then.