[Bug 93886] New: GPU Hang "stuck on render ring" (probably userspace)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93886

            Bug ID: 93886
           Summary: GPU Hang "stuck on render ring" (probably userspace)
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: erich at debian.org
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 121325
  --> https://bugs.freedesktop.org/attachment.cgi?id=121325&action=edit
/sys/class/drm/card0/error

dmesg:
[14047.920290] [drm] stuck on render ring
[14047.921017] [drm] GPU HANG: ecode 6:0:0x84fefffc, in chromium [5029],
reason: Ring hung, action: reset
[14047.921018] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[14047.921019] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[14047.921020] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[14047.921021] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[14047.921022] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[14047.923116] drm/i915: Resetting chip after gpu hang

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA
controller])
    Subsystem: Toshiba America Info Systems 2nd Generation Core Processor
Family Integrated Graphics Controller
    Flags: bus master, fast devsel, latency 0, IRQ 33
    Memory at c0000000 (64-bit, non-prefetchable) [size=4M]
    Memory at b0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at 2000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>
    Kernel driver in use: i915
    Kernel modules: i915

CPUinfo:
model name    : Intel(R) Core(TM) i7-2677M CPU @ 1.80GHz

Kernel version: 4.4.0-trunk from Debian

XOrg info:
[    20.798] (II) intel(0): Using Kernel Mode Setting driver: i915, version
1.6.0 20151010
[    20.798] (II) intel(0): SNA compiled: xserver-xorg-video-intel
2:2.99.917+git20151217-1~exp1 (Timo Aaltonen <tjaalton at debian.org>)
[    20.798] (II) intel(0): SNA compiled for use with valgrind
[    20.800] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics
3000

[    20.826] (II) intel(0): SNA initialized with Sandybridge (gen6, gt2)
backend
[    20.826] (==) intel(0): Backing store enabled
[    20.826] (==) intel(0): Silken mouse enabled
[    20.827] (II) intel(0): HW Cursor enabled
[    20.827] (II) intel(0): RandR 1.2 enabled, ignore the following RandR
disabled message.
[    20.828] (==) intel(0): DPMS enabled
[    20.828] (==) intel(0): Display hotplug detection enabled


I've been seeing graphics rendering issues for several weeks now (not so much
in Chromium, but very frequently in xfce4-terminal); probably due to driver
upgrades. Currently using "2:2.99.917+git20151217-1~exp1" from Debian
experimental. I will try downgrading to unstable to see if the issue persists.

I've titled this as "probably userspace" because of the experimental userspace
driver version.

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