[Bug 82301] New: GPU HANG: ecode 0:0xf4e9fffe, in Xorg [1507], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82301

          Priority: medium
            Bug ID: 82301
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: GPU HANG: ecode 0:0xf4e9fffe, in Xorg [1507], reason:
                    Ring hung, action: reset
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: alban.crequy at collabora.co.uk
          Hardware: Other
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Intel
           Product: DRI

Created attachment 104234
  --> https://bugs.freedesktop.org/attachment.cgi?id=104234&action=edit
/sys/class/drm/card0/error

I was scrolling in gvim on Thinkpad x220 and everything became slow. New X
windows are completely black. It happened only 1 time so far but I upgraded to
the kernel to 3.16-rc6-amd64 (from Debian packages) only yesterday. It looks
similar to Bug #79248 but it's a different ecode.

dmesg:

[22130.610086] [drm] stuck on render ring
[22130.610095] [drm] stuck on blitter ring
[22130.610624] [drm] GPU HANG: ecode 0:0xf4e9fffe, in Xorg [1507], reason: Ring
hung, action: reset
[22130.610628] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[22130.610630] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[22130.610633] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[22130.610635] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[22130.610636] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[22130.611134] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast,
banning!
[22132.610790] [drm] Enabling RC6 states: RC6 on, RC6p off, RC6pp off

/sys/class/drm/card0/error:

GPU HANG: ecode 0:0xf4e9fffe, in Xorg [1507], reason: Ring hung, action: reset
Time: 1407423560 s 878412 us
Kernel: 3.16-rc6-amd64
Active process (on ring render): Xorg [1507]
Active process (on ring blt): Xorg [1507]
(etc., see attached file)

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