I am simply confirming this issue. (gdm version 2.27.4-0ubuntu11) Both on install, and when running "dpkg-reconfigure gdm", gdm returns the issue provided by the OP.
When I try to purge gdm from the system, I get subprocess installed post-removal script returned error exit status 1 While installed, if I try to run gdmsetup, it shows the frontend, but any attempt to "unlock" the frontend so I can change settings, results in nothing. The window just sits there as if I'd never pressed anything. Running gdmsetup through a terminal window results in the following initial messages: ** (gdmsetup:7290): WARNING **: Error calling GetValue('daemon/TimedLoginEnable'): The name org.gnome.DisplayManager was not provided by any .service files ** (gdmsetup:7290): WARNING **: Error calling GetValue('daemon/TimedLoginDelay'): The name org.gnome.DisplayManager was not provided by any .service files ** (gdmsetup:7290): DEBUG: init delay=30 ** (gdmsetup:7290): DEBUG: GdmUserManager: skipping shell /bin/false ** (gdmsetup:7290): DEBUG: Failed to identify the current session: Unable to lookup session information for process '7290' ** (gdmsetup:7290): WARNING **: Unable to find users: no seat-id found ** (gdmsetup:7290): DEBUG: GdmUserManager: explicitly skipping user: nobody ** (gdmsetup:7290): DEBUG: GdmUserManager: user icon changed ** (gdmsetup:7290): DEBUG: adding monitor for '/home/dawynn/.face' ** (gdmsetup:7290): DEBUG: GdmUserManager: user icon changed ** (gdmsetup:7290): DEBUG: adding monitor for '/home/mommy/.face' ** (gdmsetup:7290): DEBUG: GdmUserManager: user icon changed ** (gdmsetup:7290): DEBUG: adding monitor for '/home/alex/.face' ** (gdmsetup:7290): DEBUG: GdmUserManager: user icon changed ** (gdmsetup:7290): DEBUG: adding monitor for '/home/derek/.face' ** (gdmsetup:7290): DEBUG: Getting list of sessions for user 1004 ** (gdmsetup:7290): DEBUG: Found 0 sessions for user derek ** (gdmsetup:7290): DEBUG: Getting list of sessions for user 1002 ** (gdmsetup:7290): DEBUG: Found 0 sessions for user alex ** (gdmsetup:7290): DEBUG: Getting list of sessions for user 1003 ** (gdmsetup:7290): DEBUG: Found 0 sessions for user mommy ** (gdmsetup:7290): DEBUG: Getting list of sessions for user 1000 ** (gdmsetup:7290): DEBUG: Found 1 sessions for user dawynn ** (gdmsetup:7290): DEBUG: GdmUserManager: not adding session on other seat: /org/freedesktop/ConsoleKit/Session1 When I try the unlock button, I get the following additional messages: ** (gdmsetup:7290): WARNING **: Failed to unlock: The name org.gnome.DisplayManager was not provided by any .service files I tried installing the jaunty version of gdm (2.20.10-0ubuntu2) but x11-common would not allow it. I searched the debian package lists, and could find no versions of gdm (not even in sid) that were even as recent as the jaunty version. ** Changed in: gdm (Ubuntu) Status: New => Confirmed -- [karmic] impossible to switch from kdm to gdm https://bugs.launchpad.net/bugs/414140 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs