[Bug 79626] New: Desktop system experienced a freeze lasting a couple of seconds

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79626

          Priority: medium
            Bug ID: 79626
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: Desktop system experienced a freeze lasting a couple
                    of seconds
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: tgrabiec at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 100389
  --> https://bugs.freedesktop.org/attachment.cgi?id=100389&action=edit
Copy of /sys/class/drm/card0/error

The last lines from dmesg after unfreeze:

[43209.531252] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95)
[43209.531544] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95)
[43728.912437] [drm] stuck on render ring
[43728.912443] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[43728.912444] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[43728.912445] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[43728.912446] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[43728.912448] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[43734.923280] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95)
[43734.923404] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95)

I'm attaching a copy of /sys/class/drm/card0/error

$ uname -a
Linux tgrabiec-laptop 3.13.0-27-generic #50-Ubuntu SMP Thu May 15 18:06:16 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux

This is the second time I get such a freeze after installing recent upgrades
from Ubuntu.

Thanks,
Tomek

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