Dear Maintainer,

These days corruption is observed on graphical applications after suspend on my
system. I suspect a problem with Nouveau driver because switching to Nvidia
proprietary driver fixes the issue (my video device is a Nvidia Quadro FX 550).

On fresh boot, everything works very well. Then I suspend the system to RAM or
I hibernate it. When resuming the system works well as well but graphical
applications show slight annoying corruption such as blurring of letters or
switch between letters. Currently for instance h is replaced by k. When I close
my session and thus restart X, the issue is no longer observed.

I can upload screen captures of before suspend vs after suspend situations.

Sincely,
Moi

Could you please test with a 3.11 kernel from experimental?  If the
problem persists, file a bug upstream.  See
http://nouveau.freedesktop.org/wiki/Bugs/ for instructions.

TIA,
    Sven

I have tested with a 3.11 kernel (3.11-trunk-686-pae, 3.11-1~exp1
(2013-09-12)) and the problem persists. I am going upstream, thank you once
again for your answer.

Supplementary information : Most of the graphical corruptions can be
overcome by restarting impacted applications (in my case : openbox/tint2
and iceweasel) so the importance of this bug is not as high as I indicated
first. Moreover the appearance of corruptions is erratic so it may be hard
hard to reproduce them. The most repetable corruption on my system is the
corruption of iceweasel's tabs after resizing the window : I did not
succeed in suspending/resuming the system without experiencing this
corruption.

Sincerly,
Moi


2013/10/9 Sven Joachim <svenjoac@gmx.de>

A bug has been filed upstream :
https://bugs.freedesktop.org/show_bug.cgi?id=70452

Moi


2013/10/9 Sven Joachim <svenjoac@gmx.de>

I have problems with the nvidia-drivers, too (os and cs) and stumbled
about this bug. Looking at the upstream bug report, I think this can
be closed, because it seems to be fixed in libdrm 2.4.48 and later.