Comment 51 for bug 38915

Some Further information to help narrow down the problem source:

Problem:
Clean install of Kubuntu 7.04 on a IBM TP21.
If I try to just logout, it won't relogin.

But the following all work:
a. I can reboot this machine with no problem,
b. Using ctrl-alt-bspc performs a relogin with no problems.
a. I have a copy of Ubuntu 7.04 on a different partition with no problems,
ie logout/login works OK.

So the problem is not with either the graphics card or with xorg.conf.

What happens:
After logging out,
1st I get the Kubuntu logo screen with a black progress bar
then flashing cursor on blank screen.
Any input is reflected on screen but doesn't seem to be processed,
eg c-alt-bspc, ctrl-c, ctrl-z

I have to change to tty1 (c-a-F1),
login as root and shutdown.

The system log shows the attached errors:
kdm :0[5312]: IO Error in XOpenDisplay
kdm[5018] Display :0 cannot be opened
kdm[5018] Unable to fire up local display :0; disabling
but again these errors do not happen on re-boot.

Michael Mayer 's workaround works for me also,
ie adding the line:
TerminateServer=true
in the [X-:*-Core] section of the kdmrc-File (/etc/kde3/kdm/kdmrc)

Hope this is helpful.