Update to mesa 9.2.3

[Eric Branson]

I am quite often getting GPU hangups and machine freezes, and the following is in my logs:

Nov 19 21:17:09 derp kernel: [131426.756136] Watchdog[8655]: segfault at 0 ip 00007fcbb70bc72e sp 00007fcba7692650 error 6 in chrome[7fcbb3514000+5eff000]
Nov 19 21:17:17 derp kernel: [131434.757554] [drm:i915_hangcheck_elapsed] *ERROR* stuck on render ring
Nov 19 21:17:17 derp kernel: [131434.757557] [drm] capturing error event; look for more information in /sys/kernel/debug/dri/0/i915_error_state
Nov 19 21:17:17 derp kernel: [131434.785406] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0xef56000 ctx 13) at 0xef561c8

A quick grep for "IPEHR" in i915_error_state gives the following:

  IPEHR: 0x79050005
  IPEHR: 0x00000000
  IPEHR: 0x0b140001

Freedesktop.org Bug #70151 says the following:

Fixed in Mesa 9.2.3 (out today), the upcoming Mesa 10.0 release, or Mesa master.
This fixes the Sandybridge-specific GPU hang where i915_error_state (aka /sys/class/drm/card0/error) lists an IPEHR of 0x79050005.

Therefore I think Mesa should be upgraded to at least 9.2.3 to fix this.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Timo Aaltonen (tjaalton)]

closing for trusty

[Shuhao (shuhao)]

This bug blocks me from upgrading some machines to 13.10. Since 13.10's support ends before 14.04 comes out, providing an upgrade so that I can continue to get support is important.

Upgrading to 13.10 without this package will make things more complicated.

[Sparhawk (sparhawkthesecond)]

Has anyone managed to install mesa 9.2.3 successfully in Saucy? My computer is horrible at the moment with this bug.

I tried upgrading mesa, but it didn't work so well.
http://askubuntu.com/questions/378310/how-can-i-recover-my-system-after-attempting-to-install-experimental-packages

[Sparhawk (sparhawkthesecond)]

Mesa > 9.2.3 is coming out in about a month with Ubuntu 14.04, so it's a bit moot, but I think this bug was quite critical when it was filed.. After the GPU crashes, I get visual artifacts in most of my programs, with fonting look garbled to varying degrees. Sometimes they are totally unreadable. There is potentiallly data loss, since I can't work out what is in each window and whether I have saved or should save data.

[Rolf Leggewie (r0lf)]

saucy has seen the end of its life and is no longer receiving any updates. Marking the saucy task for this ticket as "Won't Fix".