White screen
 

Hi all! I wasnt sure where to post this so if it fits better somewhere else move it.
I use Ubuntu 8.04 on a laptop Fujitsu-Siemens Amilo Pi1536. Everything was fine till I installed mpeg codecs. Actually during the installation the computer restarted and after that i can only log into failsafe gnome. If I try to log into gnome I get the white screen of death. I tried to erase hidden files in my home directory but that didnt work. I also have to say that i have compiz installed and I think that's the reason for my problem. Any suggestions?

Here is my xsession-errors:

/etc/gdm/Xsession: Beginning session setup...
Hello, world!
Setting IM through im-switch for locale=en_US.
Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default.
SESSION_MANAGER=local/promitheas:/tmp/.ICE-unix/5807
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL front:0
ALSA lib control.c:909:(snd_ctl_open_noupdate) Invalid CTL front:0
Shutdown failed or nothing to shut down.
xrdb: "*Label.background" on line 220 overrides entry on line 150
xrdb: "*Text.background" on line 226 overrides entry on line 191
xrdb: "*Label.foreground" on line 232 overrides entry on line 151
xrdb: "*Text.foreground" on line 238 overrides entry on line 192
Window manager warning: Failed to read saved session file /home/lamtab/.metacity/sessions/default0.ms: Failed to open file '/home/lamtab/.metacity/sessions/default0.ms': No such file or directory


Tracker version 0.6.6 Copyright (c) 2005-2007 by Jamie McCracken (jamiemcc@gnome.org)

This program is free software and comes without any warranty.
It is licensed under version 2 or later of the General Public License which can be viewed at http://www.gnu.org/licenses/gpl.txt

Initialising tracker...
11
Could not set idle IO priority...attempting best effort 7 priority
starting HAL detection for ac adaptors...found /org/freedesktop/Hal/devices/computer_power_supply_ac_adapter_AC0
Throttle level is 5
evolution-alarm-notify-Message: Setting timeout for 33691 1228003200 1227969509
evolution-alarm-notify-Message: Sun Nov 30 02:00:00 2008

evolution-alarm-notify-Message: Sat Nov 29 16:38:29 2008

seahorse nautilus module initialized
Initializing nautilus-share extension

** (nautilus:5899): WARNING **: Unable to add monitor: Not supported
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
PID TTY TIME CMD
5875 ? 00:00:00 pulseaudio

(firefox:6064): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(firefox:6064): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(firefox:6064): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(firefox:6064): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(firefox:6064): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed
cairo context error: NULL pointer
cairo context error: NULL pointer
cairo context error: NULL pointer
Window manager warning: Invalid WM_TRANSIENT_FOR window 0x2600057 specified for 0x2600126 (acroread).
Window manager warning: Invalid WM_TRANSIENT_FOR window 0x2600057 specified for 0x2600142 (Adobe Read).
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
** Message: GetValue variable 1 (1)
** Message: GetValue variable 2 (2)
Nautilus-Share-Message: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.
Thank you