computer goes blank when trying to log out or switch user

[Tony]

When I try to log out or switch user on Ubuntu, The computer goes completely blank. The only way to continue is to turn it off completely. This does not happen all the time but quite a lot.

ProblemType: Bug
Architecture: i386
Date: Tue Jan 15 17:06:47 2008
DistroRelease: Ubuntu 7.10
ExecutablePath: /usr/bin/yelp
NonfreeKernelModules: nvidia
Package: yelp 2.20.0-0ubuntu3
PackageArchitecture: i386
ProcCmdline: yelp
ProcCwd: /home/killian
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: yelp
Uname: Linux tony-desktop 2.6.22-14-generic #1 SMP Tue Dec 18 08:02:57 UTC 2007 i686 GNU/Linux

[Luke Faraone (lfaraone)]

Can you try this again in 8.04?

[Pedro Villavicencio (pedro)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to New. Thanks again!.