Created attachment 682142 [details] Xorg configuration file Description of problem: After switching user, X program takes 100% of CPU and the screen remains black. Version-Release number of selected component (if applicable): Name : xorg-x11-server-Xorg Arch : x86_64 Version : 1.13.1 Release : 4.fc18 Size : 3.3 M Repo : installed From repo : updates How reproducible: Switch user. Once every 2-3 times, it will freeze during the process of creating a new session or when coming back to existing session. Actual results: Black screen, CPU at 100%, fan at max speed. Most of the time Ctrl+Alt+F[1-9] does not work and I have to hard poweroff or if I have another computer, I can connect by ssh and reboot. Expected results: Normal new session (kdm) created or back to existing session with login window. Additional info: I had the same issue with F17 and I tested it with GDM/gnome and KDM/KDE -> same result.
Created attachment 682143 [details] Xorg log file 1
Created attachment 682144 [details] Xorg log file 2
Created attachment 682145 [details] Xorg log file 3
Created attachment 682146 [details] Xorg log file 4
Created attachment 682147 [details] dmesg output
Have also this issue, immediately after having upgraded to F18. After few switches or new session creation, either changing through "Change user" menu command or using CTRL+ALT+Fn shortcut, screen turns to black, system freezes (even caps & num locks lights don't react) and only solution is to hard reboot the box. Frequency of occurence of this bug make release completely unusable in a multi-user context
Any progress on this? Is there anything I could do to try to debug this? It is very very annoying. Any guess if this is specific to fedora or if I can swith to another distribution like kubuntu to have a stable machine?
NVidia closed source driver, can't support we don't have the source.
So you are sure it comes from the nvidia driver. Thanks for the comment. I have now posted to the nvidia forum. I would like to give a new try to the nouveau driver to see if I can now suspend the computer (impossible before: https://bugzilla.redhat.com/show_bug.cgi?id=901395). How can I remove the nvidia driver and switch to nouveau?