[Bug 92998] New: gpu hang after resume on ivybridge and dmesg errors

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92998

            Bug ID: 92998
           Summary: gpu hang after resume on ivybridge  and dmesg errors
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: tasev.stefanoska at skynet.be
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 119914
  --> https://bugs.freedesktop.org/attachment.cgi?id=119914&action=edit
dmesg after boot

Hi

After boot i have a *ERROR* mismatch in has_drrs in dmesg (at 2.40) .
After suspend/resume the gpu hang for 20 seconds with

[  109.349028] [drm] stuck on render ring
[  109.349397] [drm] GPU HANG: ecode 7:0:0x85fffff8, in kwin [1667], reason:
Ring hung, action: reset

The hang only happen with the new 4.4-rc1 kernel, never with the 4.3 stable,
but even with the 4.3 kernel there is the *ERROR* mismatch in has_drrs in
dmesg.

The gpu crash dump, dmesg after boot and after suspend/resume are attached for
the 4.4-rc1 kernel.

lspci | grep VGA 
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09)

glxinfo | grep OpenGL :

OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile 
OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.1.0-devel
(git-e06238c 2015-11-08 trusty-oibaf-ppa)
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 11.1.0-devel (git-e06238c 2015-11-08
trusty-oibaf-ppa)
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.1.0-devel (git-e06238c
2015-11-08 trusty-oibaf-ppa)

I use Kubuntu 14.04 Trusty.

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