GDM doesn't start

[Eduardo Celis]

Hi all,

suddenly gdm stop working on my computer. However, if I switch to 
runlevel 3 and try 'startx' it works, but i lost my applets, windows 
list and workspace switcher. I also tried xdm and kdm and they worked 
fine. I enable debug for gdm and i got this:

Mar 24 21:12:34 localhost gdm[7030]: gdm_main: Here we go...
Mar 24 21:12:34 localhost gdm[7030]: gdm_start_first_unborn_local: 
Starting :0
Mar 24 21:12:34 localhost gdm[7030]: gdm_display_manage: Managing :0
Mar 24 21:12:34 localhost gdm[7030]: loop check: last_start 0, last_loop 
0, now: 1080177154, retry_count: 0
Mar 24 21:12:34 localhost gdm[7030]: Resetting counts for loop of death 
detection
Mar 24 21:12:34 localhost gdm[7031]: gdm_slave_start: Starting slave 
process for :0
Mar 24 21:12:34 localhost gdm[7031]: gdm_slave_start: Loop Thingie
Mar 24 21:12:34 localhost gdm[7031]: Sending VT_NUM == -1 for slave 7031
Mar 24 21:12:34 localhost gdm[7031]: Sending VT_NUM 7031 -1
Mar 24 21:12:34 localhost gdm[7030]: gdm_display_manage: Forked slave: 7031
Mar 24 21:12:34 localhost gdm[7030]: Handling message: 'VT_NUM 7031 -1'
Mar 24 21:12:34 localhost gdm[7030]: Got VT_NUM == -1
Mar 24 21:12:34 localhost gdm[7031]: gdm_server_start: :0
Mar 24 21:12:34 localhost gdm[7030]: (child 7031) 
gdm_slave_usr2_handler: :0 got USR2 signal
Mar 24 21:12:34 localhost gdm[7031]: gdm_auth_secure_display: Setting up 
access for :0
Mar 24 21:12:34 localhost gdm[7031]: gdm_auth_secure_display: Setting up 
access
Mar 24 21:12:34 localhost gdm[7031]: gdm_auth_secure_display: Setting up 
access for :0 - 1 entries
Mar 24 21:12:34 localhost gdm[7031]: Sending COOKIE == <secret> for 
slave 7031
Mar 24 21:12:34 localhost gdm[7031]: Sending COOKIE 7031 1c...
Mar 24 21:12:34 localhost gdm[7030]: Handling message: 'COOKIE 7031 1c...'
Mar 24 21:12:34 localhost gdm[7030]: Got COOKIE == <secret>
Mar 24 21:12:34 localhost gdm[7032]: gdm_server_spawn: '/usr/X11R6/bin/X 
:0 -audit 0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7'
Mar 24 21:12:34 localhost gdm[7030]: (child 7031) 
gdm_slave_usr2_handler: :0 got USR2 signal
Mar 24 21:12:34 localhost gdm[7031]: gdm_server_spawn: Forked server on 
pid 7032
Mar 24 21:12:36 localhost gdm[7030]: (child 7031) 
gdm_server_usr1_handler: Got SIGUSR1, server running
Mar 24 21:12:36 localhost gdm[7031]: gdm_server_start: Completed :0!
Mar 24 21:12:36 localhost gdm[7031]: Sending VT_NUM == 7 for slave 7031
Mar 24 21:12:36 localhost gdm[7031]: Sending VT_NUM 7031 7
Mar 24 21:12:36 localhost gdm[7030]: Handling message: 'VT_NUM 7031 7'
Mar 24 21:12:36 localhost gdm[7030]: Got VT_NUM == 7
Mar 24 21:12:36 localhost gdm[7031]: Sending XPID == 7032 for slave 7031
Mar 24 21:12:36 localhost gdm[7030]: (child 7031) 
gdm_slave_usr2_handler: :0 got USR2 signal
Mar 24 21:12:36 localhost gdm[7031]: Sending XPID 7031 7032
Mar 24 21:12:36 localhost gdm[7030]: Handling message: 'XPID 7031 7032'
Mar 24 21:12:36 localhost gdm[7030]: Got XPID == 7032
Mar 24 21:12:36 localhost gdm[7031]: gdm_slave_run: Opening display :0
Mar 24 21:12:36 localhost gdm[7030]: (child 7031) 
gdm_slave_usr2_handler: :0 got USR2 signal
Mar 24 21:12:38 localhost gdm[7031]: Sending START_NEXT_LOCAL
Mar 24 21:12:38 localhost gdm[7030]: Handling message: 'START_NEXT_LOCAL'
Mar 24 21:12:38 localhost gdm[7031]: gdm_slave_greeter: Running greeter 
on :0
Mar 24 21:12:38 localhost gdm[7031]: gdm_slave_greeter: Greeter on pid 7040
Mar 24 21:12:38 localhost gdm[7031]: Sending GREETPID == 7040 for slave 7031
Mar 24 21:12:38 localhost gdm[7031]: Sending GREETPID 7031 7040
Mar 24 21:12:38 localhost gdm[7030]: (child 7031) gdm_slave_child_handler
Mar 24 21:12:38 localhost gdm[7030]: Handling message: 'GREETPID 7031 7040'
Mar 24 21:12:38 localhost gdm[7030]: Got GREETPID == 7040
Mar 24 21:12:38 localhost gdm[7030]: (child 7031) 
gdm_slave_usr2_handler: :0 got USR2 signal
Mar 24 21:12:38 localhost gdm[7031]: gdm_slave_wait_for_login: In loop
Mar 24 21:12:38 localhost gdm[7031]: term_quit: Final cleanup
Mar 24 21:12:38 localhost gdm[7031]: gdm_slave_quick_exit: Will kill 
everything from the display
Mar 24 21:12:38 localhost gdm[7030]: (child 7031) gdm_slave_child_handler
Mar 24 21:12:38 localhost gdm[7031]: Running gdm_verify_cleanup and pamh 
!= NULL
Mar 24 21:12:38 localhost gdm[7030]: (child 7031) 
gdm_slave_child_handler: 7040 died
Mar 24 21:12:38 localhost gdm[7031]: gdm_server_stop: Server for :0 
going down!
Mar 24 21:12:38 localhost gdm[7030]: (child 7031) 
gdm_slave_child_handler: 7040 died of 4
Mar 24 21:12:38 localhost gdm[7031]: gdm_server_stop: Killing server pid 
7032
Mar 24 21:12:39 localhost gdm[7031]: gdm_server_stop: Server pid 7032 dead
Mar 24 21:12:39 localhost gdm[7031]: gdm_slave_quick_exit: Killed 
everything from the display
Mar 24 21:12:39 localhost gdm[7030]: mainloop_sig_callback: Got signal 17
Mar 24 21:12:39 localhost gdm[7030]: gdm_cleanup_children: child 7031 
returned 2
Mar 24 21:12:39 localhost gdm[7030]: gdm_child_action: In remanage
Mar 24 21:12:39 localhost gdm[7030]: gdm_display_manage: Managing :0
Mar 24 21:12:39 localhost gdm[7030]: loop check: last_start 1080177154, 
last_loop 1080177154, now: 1080177159, retry_count: 1

Then it tries to restart again and again, until it's disabled for 2 
minutes before the next retry.

Any hints would be greatly appreciated.
Eduardo.