Comment 12 for bug 145015

Revision history for this message
Paul Taylor (paul-taylor-london) wrote : X freezes, hogging CPU

Maybe the bug has metamorphosed. At any rate, the following is similar, but I cannot work out
the appropriate heading under which to report it - if you know, please redirect my report as
appropriate.

I now have Xubuntu 8.04 (from the 24 April CD image) on the same machine.

On several occasions "it" (probably the X server) has frozen. This collection of log files comes
from the first such occasion. The update-manager was doing its stuff in the background
(fixing the SSL vulnerability), although that hangs too, and I think I had XDVI running, maybe
Firefox. I was mainly using Emacs22-gtk. I deleted a line in a file, the lines either side appeared
superimposed, then the mouse cursor disappeared.

I managed to login remotely using ssh. I found that the X server was taking 98% of the CPU,
so I killed it, but it resurrected itself and again hogged the CPU. This happenned several times.
However, I managed to save these files from /var/log.

I have had two more similar experiences, without being about to save the logs.

Similar reports on other Linux web sites have said that X hogs the CPU when there is a remote
session, but that I cannot see how to do diagnosis without having a remote session.