[Bug 75295] New: Frequent hang and render glitches on Ubuntu 14.04

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75295

          Priority: medium
            Bug ID: 75295
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: Frequent hang and render glitches on Ubuntu 14.04
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: rohandhruva at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

After the latest kernel upgrade, my system has many graphical glitches, and is
locking up frequently. The dmesg output has errors like these:

[ 1951.568672] Watchdog[2753]: segfault at 0 ip 00007fe00773a32e sp
00007fdff869f680 error 6 in chrome[7fe003cbe000+5dd9000]
[ 1959.241676] [drm] stuck on render ring
[ 1959.241685] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 1959.241686] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 1959.241687] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 1959.241688] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 1959.241689] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 1959.244266] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0x3dc32000 ctx 17) at 0x3dc32c48
[ 3964.330034] perf samples too long (2503 > 2500), lowering
kernel.perf_event_max_sample_rate to 50000
[ 4849.028446] [drm] stuck on render ring
[ 4849.028492] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0x565c2000 ctx 17) at 0x565c2c48
[ 4861.093551] Watchdog[5226]: segfault at 0 ip 00007fc00d36f32e sp
00007fbffe2d4680 error 6 in chrome[7fc0098f3000+5dd9000]
[ 4863.020198] [drm] stuck on render ring
[ 4863.020255] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0x3dc32000 ctx 17) at 0x3dc32c48
[ 4893.028245] [drm] stuck on render ring
[ 4893.028295] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0x4cbed000 ctx 10) at 0x4cbedc98
[ 4899.041855] [drm] stuck on render ring
[ 4899.041900] [drm:i915_set_reset_status] *ERROR* render ring hung inside bo
(0xea3d000 ctx 10) at 0xea3dc98
[ 4899.041903] [drm:i915_context_is_banned] *ERROR* context hanging too fast,
declaring banned!
[ 5833.173837] warning: `VBoxHeadless' uses 32-bit capabilities (legacy support
in use)
[ 5833.326542] device vboxnet0 entered promiscuous mode
[ 6429.476175] [drm] stuck on render ring
[ 6488.455986] [drm] stuck on render ring
[ 6547.507818] [drm] stuck on render ring
[ 6615.490047] [drm] stuck on render ring

I am not sure if the xserver-xorg-video-intel ricver was also updated at the
same time. This is the version in use:

rdhruva at ubuntu:~$ apt-cache policy xserver-xorg-video-intel
xserver-xorg-video-intel:
  Installed: 2:2.99.910-0ubuntu1
  Candidate: 2:2.99.910-0ubuntu1
  Version table:
 *** 2:2.99.910-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status

The corresponding ubuntu bug is:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1282867. That bug has a
lot of information, including dmidecode output.

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