Bengt Olsson wrote:
> When I switch from one user to another I get the black screen. Logging
> in remotely I see that what I presume is a new gdm process consumes
> almost all CPU:
>
> root      5732 99.6  0.5  15312  6160 tty9     RLs+ 15:33   9:40
> /usr/bin/X :20 -br -audit 0 -auth /var/lib/gdm/:20.Xauth -nolisten tcp
> vt9
>
> It is no problem otherwise to work on the box from a ssh session. But
> when I try to kill the above process with "kill -9" the box hangs
> completely, including the ssh session. Any other specific information
> you want from the ssh session while in "hang state"?
>
>   
try an
strace -p PID-OF-PROCESS
and see if you get anything interesting

Sam

-- 
Switch User freezes at blank screen
https://bugs.launchpad.net/bugs/112518
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