I am running a very nearly fresh Gnome version of 12.10, with no particular tweaks or customisation. I performed an upgrade yesterday using
sudo apt-get update; sudo apt-get upgrade
which completed successfully. After rebooting, I find that I am no longer able to log in - entering my (correct) password brings up a black terminal for a couple of seconds as usual and then returns me to the login screen. So far:
- The guest account can log in fine
- I can log in to a terminal via Ctrl+Alt+1 etc
- Deleting all my gnome profile entries (.gnome, .gnome2, .gconf, etc) does not help
- A new empty user (created using
$ sudo adduser newguy; sudo passwd newguy) has the same problem
/var/log/sysloghas some odd messages including
gdm-simple-slave: WARNING: Child process -1838 was already dead
WARNING: Failed to give slave programs access to the display. Trying to proceed
- I installed
kde-standardand had the same problem, so it is not a Gnome issue
startxfrom the terminal available through Ctrl+Alt+1 brings me to a working desktop. If this is allowed to go to screen-saver or is locked, I am unable to wake it (I get an "Authentication Error" message below the password entry field).
- Opening a terminal in a guest session, running
su - myusernameand entering my password and gives the error
setgid: Operation not permitted
I surmise that something about the Ubuntu login is broken, at least on my system.
Any suggestions will be most gratefully received...