I have an issue here with my computer using ubuntu 10.10 on a 64 bits machine. When I start it, I have the login screen, I enter my credentials but instead of starting the session it reloads the login screen again.

I checked the disc using fsck and it seems clean. How should I proceed to diagnose and repair this issue?

Thanks!

[Edit]

I went to the log files, this is what I got:

auth.log

pam_unix (gdm:session): session opened for user amokrane by (uid=0)

pam_ck_connector (gdm:session): nox11 mode, ignoring PAM_TTY :0 pam_unix

(gdm:session) :session closed for user amokrane

messages.log

No ACPI video bus found

I also took a shot with my camera of the black screen that appears between the two login screens, it says something like:

fsck from util-linux-ng 2.17.2

/dev/sdc4 : propre, xxxx files, xxxx blocs

Starting AppArmor profiles

Skipping profiles in /etc/apparmor.d/disable: usr.bin.firefox

Setting sensors limits

Starting postgreSQL ...

/var/log/Xorg.0.log

[ 25.375] (II) intel(0): Modeline "1920x1080"x60.0 172.80 ...

[ 28.850] (II) Power Button: Close [ 28.850] (II) UnloadModule: "evdev"

[ 29.910] (II) Power Button: Close [ 28.910] (II) UnloadModule: "evdev"

[ 28.941] (II) AT Translated Set 2 keyboard: Close

[ 29.000] (II) ImPS/2 Generic Wheel Mouse: Close

[ 29.000] (II) UnloadModule: "evdev"

[ 29.039] ddxSigGiveUp: Closing log

Update I tried the following:

Ctrl-Alt-F1 on the login screen (to runt the console).
sudo pkill startx
sudo rm /tmp/.X0-locl
startx

But it tells me that the x server is already running.