[Bug 96989] New: Screen freeze when getting out of fullscreen from vlc, youtube

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96989

            Bug ID: 96989
           Summary: Screen freeze when getting out of fullscreen from vlc,
                    youtube
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: blocker
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jinchoiseoul at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 125138
  --> https://bugs.freedesktop.org/attachment.cgi?id=125138&action=edit
file from /sys/class/drm/card0/error

Sometimes, when I get out of fullscreen from vlc, or youtube on chrome browser,
screen freezes for about 10 seconds(mouse pointer not moving, nor keyboard
working, none at all) and it comes back. Unfortunately, 1 out of 5, the whole
system doesn't come back. I mean, frozen for good. I can't even change to text
mode (ctrl+alt+F1). The only way is to cold reboot. (ctrl+alt+del nor anything
else work)

I don't know for sure how to reproduce the bug exactly, but it seems that the
longer I stay as fullscreen on video playing program, the more likely the bug
occurs.

Note: I don't know what Version I should select so I left it unspecified. And
basic information I think that matters are below:
$ lsb_release -r
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.4 LTS
Release:        14.04
Codename:       trusty

$ uname -a
Linux greenjin-H97M-D3H 3.13.0-92-generic #139-Ubuntu SMP Tue Jun 28 20:42:26
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

$ sudo lshw -c video
  *-display               
       description: VGA compatible controller
       product: Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics
Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci at 0000:00:02.0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:46 memory:f7800000-f7bfffff memory:e0000000-efffffff
ioport:f000(size=64)

$ tail /var/log/kern.org
4810 Jul 19 17:30:09 greenjin-H97M-D3H kernel: [ 8170.332969] [drm] stuck on
render ring
4811 Jul 19 17:30:09 greenjin-H97M-D3H kernel: [ 8170.332971] [drm] GPU crash
dump saved to /sys/class/d     rm/card0/error
4812 Jul 19 17:30:09 greenjin-H97M-D3H kernel: [ 8170.332972] [drm] GPU hangs
can indicate a bug anywher     e in the entire gfx stack, including userspace.
4813 Jul 19 17:30:09 greenjin-H97M-D3H kernel: [ 8170.332973] [drm] Please file
a _new_ bug report on bu     gs.freedesktop.org against DRI -> DRM/Intel
4814 Jul 19 17:30:09 greenjin-H97M-D3H kernel: [ 8170.332973] [drm] drm/i915
developers can then reassig     n to the right component if it's not a kernel
issue.
4815 Jul 19 17:30:09 greenjin-H97M-D3H kernel: [ 8170.332974] [drm] The gpu
crash dump is required to an     alyze gpu hangs, so please always attach it.

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