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I am running LTSP (not sure what version nor how to check, I didn't
install it) on a pair of systems with one running FC5 and one running
FC4. When a users workstation gets turned off or reset their session
stays running causing the machine to be unable to talk to gdm so the
user cannot login again. Every couple of days we get users stuck in this
situation. We have around 30 constant users.

There is a config variable in gdm.conf called PingIntervalSeconds which
defaults to 15 seconds according to the docs (gdm 2.14.9 on the FC5 box
and gdm 2.6.0 on FC4) but I specifically set it to 15 seconds just to be
sure. When a users terminal is turned off the docs say that the ping
between gdm and the remote X server should time out after 15 seconds and
then the user is logged off. But in our case this is not happening. I
have strace'd the gdm-binary and I see that it is indeed pinging every
15 seconds. When the ping fails it does a kill() on its own PID.

When gdm-binary dies it goes zombie and shows in the process list as
defunct. Shouldn't the parent gdm-binary wait() on the exit code? I did
an strace on the parent gdm-binary during this process and did not see
this happening. Anyone else having this problem?

- --
Tracy R Reed
http://ultraviolet.org
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