kdm crashing because of gdm and x11-common 1:7.4+3ubuntu10

[kolAflash]

Binary package hint: x11-common

Since a few days, after updating to ureadahead, my kdm login didn't worked any more. I could find a workaround to it, but in the end i didn't found out what all that had to do with ureadahead.

I already posted a lot about this problem here:
http://ubuntuforums.org/showthread.php?p=8449299
and here:
https://bugs.launchpad.net/ubuntu/+source/ureadahead/+bug/484677

So to me is seems like x11-common version 1:7.4+3ubuntu10 and gdm try to detect if the x-session starts correctly and if not they try to start a failsave session.
So if you have kdm and gdm installed, because of something gdm and x11-common doesn't seem to detect the running kdm session and try to start an failsave x11-session.

By this, you get a black screen with a non blinking cursor on the upper left.

As a workaround, you can:
- switch to gdm OR
- uninstall gdm OR
- downgrade x11-common to 1:7.4+3ubuntu7

This all happend on a system which was updated from 8.10 to 9.04 to 9.10. I'm using all the KDE-Stuff (including kdm) but Gnome is installed too.
If you need more information, please take a look at the links I posted. There is also some stuff from my xorg.log!

Thanks!
kolAflash

[Bryce Harrington (bryce)]

Hi colaflash,

Please attach the output of `lspci -vvnn` and `dmesg`, and attach your /var/log/Xorg.0.log (and maybe Xorg.0.log.old) file from after reproducing this issue. If you're using a custom /etc/X11/xorg.conf please attach that as well.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[kolAflash (colaflash)]

So here are my log files.

I did two system-startups. One with the x11-common version 1:7.4+3ubuntu10 (all files for this are marked with "failure") and one with the x11-common version 1:7.4+3ubuntu7 (marked with ok).

Additional i did the lspci.