[Bug 78094] task unity-settings-:5149 blocked for more than 120 seconds.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78094

Imre Deak <imre.deak at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |chris at chris-wilson.co.uk

--- Comment #1 from Imre Deak <imre.deak at gmail.com> ---
(In reply to comment #0)
> Created attachment 98192 [details]
> The relevant part of /var/log/syslog
> 
> After some time of running in usermode on Ubuntu 14.04 with Linux
> 3.13.0-24-generic on x86 amd64 machine I'm experiencing some applications
> hanging, i.e. not responding to mouse gestures, and the rest behaving as
> usual. I can start the shutdown routine over GNOME menu or by issueing `sudo
> shutdown -h 0`, but it never succeeds, i.e. I have to press the power button.
> My syslog told me to file a bug against the specified component. I have no
> experience in filing bugs against this component, so please tell me a
> command or a link for the creation of the gpu dump (if needed).

The GPU dump is stored in /sys/class/drm/card1/error, so please attach the
contents of this file after you reproduced the hang.

Also could you provide the full dmesg log starting from boot up?

Do you always get the same btrfs errors when the GPU hangs? That could point to
some more generic, file system related issue on your system. In that case you
might have to try something more stable like ext4.

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