[Bug 93033] New: GPU hang while using X on Sandy Bridge notebook

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93033

            Bug ID: 93033
           Summary: GPU hang while using X on Sandy Bridge notebook
           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: rbrito at ime.usp.br
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 119967
  --> https://bugs.freedesktop.org/attachment.cgi?id=119967&action=edit
dmesg output with the message of a kernel hang

Hi.

I have recently (say, since upgrading to kernel 4.2, but not really sure of the
exact period) having some GPU hangs with my Sandy Bridge notebook while using X
and, during these events, all the user interface elements become frozen for a
few moments.

In one occasion, I even had my entire X session killed and I was back to the
Linux console.

I *believe* (but can't say with 100% confidence) that it happens when I play
videos on Youtube with Debian's Iceweasel.  I don't believe that I have
experienced one of these hangs with "regular" video players like mpv, mplayer
or vlc, but my memory is really weak these years.

I am attaching some information and, if needed, I can try to provide anything
else that you ask me to.

Output of uname -a:

* Linux zatz 4.2.0-1-amd64 #1 SMP Debian 4.2.6-1 (2015-11-10) x86_64 GNU/Linux

Distribution:

* Debian testing.

Machine:

* It's (I believe) a rebranded Clevo notebook with a Core i5-2410M and no other
video card.

I have a GPU crash dump that I'm attaching here. I will try to boot with
special options listed on
https://01.org/linuxgraphics/documentation/how-report-bugs, but I don't know if
I will be able to reproduce this problem reliably.


Once again, if there is anything else that I can provide, please just ask.


Thanks,

Rogério Brito.

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