[Bug 84596] New: X freezes frequently if GPU is under more than light load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84596

            Bug ID: 84596
           Summary: X freezes frequently if GPU is under more than light
                    load
           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: benkokakao at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 107224
  --> https://bugs.freedesktop.org/attachment.cgi?id=107224&action=edit
[drm] GPU crash dump saved to /sys/class/drm/card0/error

On my new Zotac ID92 i experience frequent freezes of the graphic output which
last for a few seconds, usually when the GPU is under a bit of load, like
playing a movie, using Chrome (Particulary when using the integrated
flashplayer) or playing a game. 

The problem is reproducable and i can provide additional crash dumps if
necessary.

Intel Haswell with HD Graphics 4600

# uname -ri
3.13.0-36-generic x86_64

# lsb_release -dc
Description:    Ubuntu 14.04.1 LTS
Codename:    trusty


# Xorg -version

X.Org X Server 1.15.1
Release Date: 2014-04-13
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.2.0-61-generic x86_64 Ubuntu
Current Operating System: Linux id92 3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3
21:30:07 UTC 2014 x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.13.0-36-generic
root=UUID=a49242bd-0ee4-4268-9f63-27622f3dee59 ro quiet splash vt.handoff=7
Build Date: 30 July 2014  12:21:54AM
xorg-server 2:1.15.1-0ubuntu2.1 (For technical support please see
http://www.ubuntu.com/support) 
Current version of pixman: 0.30.2


>From for the latest crash /var/log/syslog, the crash dump is attached:

Oct  2 14:35:06 id92 kernel: [18996.039017] [drm] stuck on render ring
Oct  2 14:35:06 id92 kernel: [18996.039689] [drm] GPU HANG: ecode 0:0x85dffffd,
in mpv [11864], reason: Ring hung, action: reset
Oct  2 14:35:06 id92 kernel: [18996.039691] [drm] GPU hangs can indicate a bug
anywhere in the entire gfx stack, including userspace.
Oct  2 14:35:06 id92 kernel: [18996.039691] [drm] Please file a _new_ bug
report on bugs.freedesktop.org against DRI -> DRM/Intel
Oct  2 14:35:06 id92 kernel: [18996.039692] [drm] drm/i915 developers can then
reassign to the right component if it's not a kernel issue.
Oct  2 14:35:06 id92 kernel: [18996.039693] [drm] The gpu crash dump is
required to analyze gpu hangs, so please always attach it.
Oct  2 14:35:06 id92 kernel: [18996.039694] [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Oct  2 14:35:08 id92 kernel: [18998.039562] [drm] Enabling RC6 states: RC6 on,
RC6p off, RC6pp off
Oct  2 14:41:18 id92 kernel: [19367.836656] perf samples too long (2523 >
2500), lowering kernel.perf_event_max_sample_rate to 50000

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