LinuxQuestions.org - gdm can't start login screen

I upgraded from SuSE 9.3 to SuSE 10.0 on a Dell Latitude D800 laptop.
Since then I have not been able to get gdm to run.
The nvidia splash screen displays, then I get the gray background of an X server without a window manager. After 30 seconds or so, the screen goes blank and repeats the display of the nvidia splash screen and the server blankground.

There are no obvious errors in the Xorg.0.log file.

The /var/log/gdm/:0.log file contains about 5000 lines starting with the following. gdm appears to be in a loop.

I've tried getting rid of my .Xauthority file and the one in /root. That didn't make any difference.
My /etc/hosts file is okay. In terminal mode I can run yast and check for online updates, run svn, etc. I can't run gdm.

Thanks for any help,
Steve

Here's gdm/:0.log:

gdm_main: Here we go...
gdm_start_first_unborn_local: Starting :0
gdm_display_manage: Managing :0
loop check: last_start 0, last_loop 0, now: 1130368855, retry_count: 0
Resetting counts for loop of death detection
gdm_slave_start: Starting slave process for :0
gdm_slave_start: Loop Thingie
Sending VT_NUM == -1 for slave 23437
Sending VT_NUM 23437 -1
gdm_display_manage: Forked slave: 23437
Handling message: 'VT_NUM 23437 -1'
Got VT_NUM == -1
gdm_server_start: :0
gdm_auth_secure_display: Setting up access for :0
gdm_auth_secure_display: Setting up access
gdm_auth_secure_display: Setting up access for :0 - 1 entries
Sending COOKIE == <secret> for slave 23437
Sending COOKIE 23437 7...
Handling message: 'COOKIE 23437 7...'
Got COOKIE == <secret>
Sending AUTHFILE == /var/lib/gdm/:0.Xauth for slave 23437
Sending AUTHFILE 23437 /var/lib/gdm/:0.Xauth
Handling message: 'AUTHFILE 23437 /var/lib/gdm/:0.Xauth'
Got AUTHFILE == /var/lib/gdm/:0.Xauth
gdm_server_spawn: '/usr/X11R6/bin/X :0 -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp vt7'
gdm_server_spawn: Forked server on pid 23440
gdm_server_start: Completed :0!
Sending VT_NUM == 7 for slave 23437
Sending VT_NUM 23437 7
Handling message: 'VT_NUM 23437 7'
Got VT_NUM == 7
Sending XPID == 23440 for slave 23437
Sending XPID 23437 23440
Handling message: 'XPID 23437 23440'
Got XPID == 23440
gdm_slave_run: Opening display :0
Oct 26 16:20:56 kelem-laptop kernel: agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
Oct 26 16:20:56 kelem-laptop kernel: agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
Oct 26 16:20:56 kelem-laptop kernel: agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
Oct 26 16:20:57 kelem-laptop kernel: agpgart: Found an AGP 2.0 compliant device at 0000:00:00.0.
Oct 26 16:20:57 kelem-laptop kernel: agpgart: Putting AGP V2 device at 0000:00:00.0 into 4x mode
Oct 26 16:20:57 kelem-laptop kernel: agpgart: Putting AGP V2 device at 0000:01:00.0 into 4x mode
Sending START_NEXT_LOCAL
Handling message: 'START_NEXT_LOCAL'
gdm_slave_greeter: Running greeter on :0
gdm_slave_greeter: Greeter on pid 23461
Sending GREETPID == 23461 for slave 23437
Sending GREETPID 23437 23461
Handling message: 'GREETPID 23437 23461'
Got GREETPID == 23461
gdm_socket_handler: Accepting new connection fd 8
Handling user message: 'VERSION'
Handling user message: 'GET_CONFIG_FILE'
Handling user message: 'CLOSE'
Handling message: 'GREETPID 23437 0'
Got GREETPID == 0
gdm_slave_greeter: Running greeter on :0
gdm_slave_greeter: Greeter on pid 23470
Sending GREETPID == 23470 for slave 23437
Sending GREETPID 23437 23470
Handling message: 'GREETPID 23437 23470'
Got GREETPID == 23470
gdm_socket_handler: Accepting new connection fd 8
Handling user message: 'VERSION'
Handling user message: 'GET_CONFIG_FILE'
Handling user message: 'CLOSE'
Handling message: 'GREETPID 23437 0'
Got GREETPID == 0
gdm_slave_wait_for_login: In loop
gdm_slave_wait_for_login: end verify for ''
gdm_slave_greeter: Running greeter on :0
gdm_slave_greeter: Greeter on pid 23479
Sending GREETPID == 23479 for slave 23437
Sending GREETPID 23437 23479
Handling message: 'GREETPID 23437 23479'
Got GREETPID == 23479
gdm_socket_handler: Accepting new connection fd 8
Handling user message: 'VERSION'
Handling user message: 'GET_CONFIG_FILE'
Handling user message: 'CLOSE'
Handling message: 'GREETPID 23437 0'
Got GREETPID == 0
gdm_slave_greeter: Running greeter on :0
gdm_socket_handler: Accepting new connection fd 8
Handling user message: 'VERSION'
Handling user message: 'GET_CONFIG_FILE'
Handling user message: 'CLOSE'
gdm_slave_greeter: Greeter on pid 23488
Sending GREETPID == 23488 for slave 23437
Sending GREETPID 23437 23488
Handling message: 'GREETPID 23437 23488'
Got GREETPID == 23488
Handling message: 'GREETPID 23437 0'
Got GREETPID == 0
gdm_slave_wait_for_login: In loop
gdm_slave_wait_for_login: end verify for ''
gdm_slave_greeter: Running greeter on :0
gdm_slave_greeter: Greeter on pid 23497
Sending GREETPID == 23497 for slave 23437
Sending GREETPID 23437 23497
Handling message: 'GREETPID 23437 23497'
Got GREETPID == 23497
gdm_socket_handler: Accepting new connection fd 8
Handling user message: 'VERSION'
Handling user message: 'GET_CONFIG_FILE'
Handling user message: 'CLOSE'
Handling message: 'GREETPID 23437 0'
Got GREETPID == 0
gdm_slave_greeter: Running greeter on :0
gdm_slave_greeter: Greeter on pid 23506
Sending GREETPID == 23506 for slave 23437
Sending GREETPID 23437 23506
Handling message: 'GREETPID 23437 23506'
Got GREETPID == 23506
gdm_socket_handler: Accepting new connection fd 8
Handling user message: 'VERSION'
Handling user message: 'GET_CONFIG_FILE'
Handling user message: 'CLOSE'
Handling message: 'GREETPID 23437 0'
Got GREETPID == 0
gdm_slave_wait_for_login: In loop