More problems with xorg

[Paul Schmehl]

Now that I finally got xinerama working again (by using MergeFB as an 
Option for my Radeon card), another problem has cropped up.  The 
screensaver isn't running, and when I lock the workstation, I can't get a 
prompt to unlock.  The screen goes to the unlock screen with no prompt.

dbus is running:
root at hostname# dbus-launch
DBUS_SESSION_BUS_ADDRESS='unix:path=/var/tmp/dbus-KbuylYjLnz,guid=500b2b44f8f2f2b68c02568f0755f200';
DBUS_SESSION_BUS_PID=851;

and the socket exists, but there's an extra one:
root at hostname# ls /var/tmp/dbus-*
/var/tmp/dbus-KbuylYjLnz        /var/tmp/dbus-mHCgjDCXI2

which claims to be in use:
root at hostname# dbus-cleanup-sockets
Cleaned up 0 sockets in /var/tmp; 2 sockets are still in use; 0 in unknown 
state

but gnome-screensaver can't find the socket:
root at hostname# gnome-screensaver-command
gnome-screensaver-Message: Failed to connect to the D-BUS daemon: Unable to 
dete rmine the address of the message bus

If I export the session bus address in the terminal, then 
gnome-screensaver-command can connect, and it tells me screensaver is not 
running:
root at hostname# export 
DBUS_SESSION_BUS_ADDRESS=unix:path=/var/tmp/dbus-KbuylYjLnz
root at hostname# gnome-screensaver-command
gnome-screensaver-Message: Screensaver is not running!

Here's log entries germane to screensaver:
root at hostname# grep screensaver /var/log/* | less
/var/log/setuid.today:2103930 -r-sr-sr-x  1 root  wheel   73512 Mar 11 
00:28:00 2006 /usr/X11R6/libexec/gnome-screensaver-dialog
/var/log/setuid.yesterday:2103930 -r-sr-sr-x  1 root  wheel   73512 Mar 11 
00:28:00 2006 /usr/X11R6/libexec/gnome-screensaver-dialog

And to gdm:
/var/log/messages:Mar 29 13:54:16 utd59514 gdm[673]: Error reinitilizing 
server
/var/log/messages:Mar 29 16:14:56 utd59514 gdm[678]: Error reinitilizing 
server

There's nothing else in the logs (AFAICT) to give me a clue what might be 
wrong.

If I lock the desktop, I have to restart gdm (Ctrl-Alt-Backspace) to get 
functionality back, and the console says "gdm[pid]: Error reinitializing 
properly".

Any suggestions as to what to look at next would be appreciated.

Paul Schmehl (pauls at utdallas.edu)
Adjunct Information Security Officer
The University of Texas at Dallas
http://www.utdallas.edu/ir/security/