Re: [Ubuntugnome-qa] Help-me to diagnose this freeze

[Felipe de Andrade Neves Lavratti <felipelav@xxxxxxxxx>]

Right Marius, as soon it freezes again I'll perform your suggestions.

1) Check dmseg

2) Check if gnome-shell pid changes on kill

3) Check if killing gnome-session unfreeze tty7.

On Tue, Jan 7, 2014 at 9:58 AM, Marius Gedminas <marius@xxxxxxxxx> wrote:

On Mon, Jan 06, 2014 at 07:38:00PM -0200, Felipe de Andrade Neves Lavratti wrote:
> I am running the Gnome Trusty Thar and the Gnome interface frequently
> freezes. I can access the other tty consoles through the keyboard shortcut
> but I couldn't find the process that freezes. Tried to kill gnome-shell but
> the tty7 doesn't unfreeze.
>
> How can I diagnose it?

The part about tty7 not unfreezing when you kill gnome-shell makes me
suspect the video driver.  A GPU hang, perhaps?  Unfortunately I've
little clue how to diagnose those.

Do you see anything interesting in dmesg?  In /var/log/Xorg.0.log?

Does gnome-shell actually die when you kill it?  It's possible
gnome-session -- or upstart nowadays -- restarts a new instance of
gnome-shell when it sees the old one died, so check if the PID changes
or if the process goes away entirely.

Marius Gedminas
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