gdm failsafe problem after upgrade

[H.S.]

Hello,

This is on Edgy eft, update. Gdm log in screen fails to come up and 
instead I am presented with a failsafe login screen. I notice that I get 
the following errors in /var/log/syslog:
--------------------------------------------------------------------------
Mar 19 13:44:23 audioserver gdm[12407]: failsafe dialog failed 
(inhibitions: 0 0)
Mar 19 13:44:23 audioserver gdm[12407]: failsafe dialog failed 
(inhibitions: 0 1)
--------------------------------------------------------------------------


and I get these errors in /var/log/
--------------------------------------------------------------------------
$> cat /var/log/gdm/\:0.log

X Window System Version 7.1.1
Release Date: 12 May 2006
X Protocol Version 11, Revision 0, Release 7.1.1
Build Operating System: Linux 2.6.15.7 i686
Current Operating System: Linux audioserver 2.6.17-11-generic #2 SMP Thu 
Feb 1 19:52:28 UTC 2007 i686
Build Date: 07 July 2006
         Before reporting problems, check http://wiki.x.org
         to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
         (++) from command line, (!!) notice, (II) informational,
         (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon Mar 19 13:44:20 2007
(==) Using config file: "/etc/X11/xorg.conf"
error opening security policy file /usr/lib/xserver/SecurityPolicy
     xkb_keycodes             { include "xfree86+aliases(qwerty)" };
     xkb_types                { include "complete" };
     xkb_compatibility        { include "complete" };
     xkb_symbols              { include 
"pc(pc105)+us+level3(ralt_switch)" };
     xkb_geometry             { include "pc(pc105)" };
The XKEYBOARD keymap compiler (xkbcomp) reports:
 > Warning:          Type "ONE_LEVEL" has 1 levels, but <RALT> has 2 symbols
 >                   Ignoring extra symbols
Errors from xkbcomp are not fatal to the X server
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
Could not init font path element /usr/share/fonts/X11/TTF/, removing 
from list!
Could not init font path element /usr/share/fonts/X11/OTF, removing from 
list!
Could not init font path element /usr/share/fonts/X11/CID/, removing 
from list!
AUDIT: Mon Mar 19 13:44:23 2007: 12394 X: client 3 rejected from local host
AUDIT: Mon Mar 19 13:44:23 2007: 12394 X: client 3 rejected from local host
--------------------------------------------------------------------------


Finally, I get these erros in /var/log/Xorg/
--------------------------------------------------------------------------
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(**) Option "Device" "/dev/wacom"
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(**) Option "Device" "/dev/wacom"
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(EE) xf86OpenSerial: Cannot open device /dev/wacom
         No such file or directory.
Error opening /dev/wacom : Success
(II) Configured Mouse: ps2EnableDataReporting: succeeded
Could not init font path element /usr/share/fonts/X11/TTF/, removing 
from list!
Could not init font path element /usr/share/fonts/X11/OTF, removing from 
list!
Could not init font path element /usr/share/fonts/X11/CID/, removing 
from list!
AUDIT: Mon Mar 19 13:44:23 2007: 12394 X: client 3 rejected from local host
AUDIT: Mon Mar 19 13:44:23 2007: 12394 X: client 3 rejected from local host
--------------------------------------------------------------------------


I have tried to comment out the sections relevant to wacom in 
/etc/X11/xorg.conf file and the errors from the log files have 
dissappeared (I am doing this remotely, so cannot verify visually). 
Looks like the graphical gdm greeter is now working, but I need to 
verify this somehow.

I am wondering, how to make xorg delete the wacom related lines from 
xorg.conf. If I change these lines manually (comment them out) and 
whenever I dpkg-reconfigure xorg, the lines reappear. This is on an Acer 
desktop (wacom module is related to tablet PCs I guess).

->HS