Bug#776911: gnome-session: session fails to start with "something went wrong" message

[Simon McVittie]

Control: reassign 770130 xserver-xorg-video-intel

On 15/03/15 13:59, Rafał Pietrak wrote:
> W dniu 13.03.2015 20:56, Simon McVittie pisze:
>> On Fri, 06 Feb 2015 at 18:20:35 +0000, Simon McVittie wrote:
>>> This sounds a lot like another instance of
>>> <https://bugs.debian.org/775235> and
>>> <https://bugs.debian.org/770130> on which some debugging has
>>> already been done.
>
> There is no "GPU crash ..." that I can see; and
> "/sys/class/drm/card0/error" reports "no error state collected".
> 
> But I've noticed, that the "underrun error" is triggered when I read
> "/sys/class/drm/card0/card0-VGA-1/status" (an NOT, when I do that with
> LVDS -- I do use only the laptop screen and don't have VGA socket
> connected); so in case this help somebody figure it out, I'm attaching
> grep-ed syslog from time I executed the following commands.

OK, this still looks similar to #770130 (leaving it merged), but not to
my new bug #780413 on similarly old hardware; so unfortunately my
attempts to reproduce this on the oldest hardware I could find have not
been successful.

I'm reassigning this to the Intel X driver in the hope that someone can
make more sense out of it. I'm fairly sure this bug is in some lower
layer than gnome-shell, and given that it's on approximately 10 year old
hardware (Intel Corporation 82852/855GM Integrated Graphics Device) I'm
not sure that it's release-critical either.

    S