Alistair Crust alistair at skegnessgrammar.org
Fri Feb 29 17:31:51 GMT 2008

Firstly I apologise if this has been asked and answered here before. I
did a quick search but came up with nothing so far so I'm opting for the
"just ask" option ;-).

I have 3 edubuntu dapper servers with ltsp 4.2 [1] and I have a problem
where the students have gotten lazy and Crtl+Alt+Backspace to logout.
Often I'll see quite a lot of zombie processes on the servers and the
like, xdmcp leases seam to increase and the way we load balance is far
less accurate than it used to be. I think, because they have done the
quick trick of Crtl+Alt+Backspace and not logged out using the correct,
preferred method thus leaving some of their processes behind.

Is there any way that I can get a Crtl+Alt+Backspace key event on the
thin clients to log a user out, rather than restarting the Xserver (I'd
still like to be able to restart X though, maybe an extra combination
like Ctrl+Alt+BackSpace+0 if possible).

We also seam to have a problem where lbussd hogs resources and users
sometimes can't access their usb pen drives. I really don't know where
to start to diagnose why, but I have found that using slay to kill that
users processes and removing .lbussd.out and .lbus_fifo from their home
directory seams to do the trick.

I really can't wait till the next LTS release, updated openoffice,
firefox3 and mainly all the cool things the members of Ltsp Drivers and
others are doing to the ltsp side.

Kind regards
Alistair Crust <alistair at skegnessgrammar.org>
Systems Administrator
Skegness Grammar School
Vernon Road
Tel: 01754610000

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