Hello,

I'm seeing #631391[1], but with lightdm and nouveau, even the workaround
works (disabling compositing). Since I don't have any problems with the
proprietary nvidia driver I thought it might be the driver.

[1] if you don't want to look it up a short summary is: on login strange
effects are seen when cold-booting or garbled pieces from previous
session if you reboot. The workaround is to disable compositing.

Kind regards,
Andrei

Quite possible, although the submitter of #631391 has Radeon cards.

Can you please test version 1:1.0.6-1 from experimental?

Cheers,
       Sven

Sorry, forgot to mention I already did. No change.

Kind regards,
Andrei

Okay, could you please temporarily disable the 3D driver, e.g. with

# echo "LIBGL_ALWAYS_SOFTWARE=1" >> /etc/environment

(not sure if lightdm makes any use of it, just to rule that out) and try
a 3.7 kernel from experimental?  If the problem still persists, file an
upstream bug on freedesktop bugzilla, see
http://nouveau.freedesktop.org/wiki/Bugs for instructions.

Cheers,
       Sven

Version: 1:1.0.11-1
xserver-xorg-video-nouveau 1:1.0.10-1+b2 and rebooted, but couldn't
reproduce the bug either. However I had an external monitor connected
to my laptop, and I'm not sure that the bug appears with it under some
conditions. So, I disconnected the monitor, rebooted, and tried again,
and the bug was reproducible with 1:1.0.10-1+b2. Then I upgraded to
1:1.0.11-1 again (only this package), and the bug was no longer
reproducible: just after login, instead of the usual garbage (more
precisely, parts of passed X sessions), the lightdm background image
remained displayed until it was replaced by my desktop.

So, I confirm that the upgrade of xserver-xorg-video-nouveau from
1:1.0.10-1+b2 to 1:1.0.11-1 alone solves the problem.

As I has been the only one commenting this bug (and the merged one)
since Feb 2013, I'm closing it.

I can still reproduce this, most reliable on cold-boot or reboot.

This doesn't seem to have any effect. I'm now on 3.16-2 from unstable.

It's still on my TODO list, but...

Kind regards,
Andrei

I had submitted one upstream (see forwarded) and didn't close it
since I didn't have the confirmation of any fix. Note that I still
couldn't reproduce the bug (on two machines), even after a reboot,
but I haven't tried more than a few times (before 1:1.0.11-1, it
was always reproducible, IIRC).

I had a look at the changes in 1.0.11, but could not really find an
explanation for this change.  Maybe it's because the GLXVBlank option
is now enabled by default.

Cheers,
       Sven