Edit: The title should probably say "lightdm won't start after apt-get purge gdm"
I'm having a problem the upgrade to 11.10 went successfully I decided to remove gdm as a result with
apt-get purge gdm
unfortunately after I've done so lightdm no longer loaded properly can someone figure out what's going on
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.1.log", Time: Fri Oct 14 10:03:14 2011
(==) Using config file: "/etc/X11/xorg.conf"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(EE) open /dev/fb0: No such file or directory
(EE) CHROME(0): Unknown Card-Ids (3344|1462|2590), Chipset: VM800/P4M800Pro/VN800/CN700; please report to email@example.com
(EE) [drm] Could not set DRM device bus ID.
(EE) CHROME(0): [dri] DRIScreenInit failed. Disabling DRI.
Freed 12587008 (pool 1)
ddxSigGiveUp: Closing log
[+0.51s] DEBUG: Releasing VT 7
[+0.51s] DEBUG: Display server stopped
[+0.51s] DEBUG: Display stopped
[+0.51s] DEBUG: Stopping X local seat, failed to start a display
[+0.51s] DEBUG: Stopping seat
[+0.51s] DEBUG: Seat stopped
[+0.51s] DEBUG: Stopping lightdm, required seat has stopped
[+0.51s] DEBUG: Stopping display manager
[+0.51s] DEBUG: Display manager stopped
[+0.51s] DEBUG: Stopping Light Display Manager
also sudo apt-get install gdm (install back gdm that was removed) doesn't fix the issue.
Maybe GDM removed more than it installs back?