I have the same problem on an IBM Thinkpad T41p (Pentium M, ATI FireGL T2 (RV350) graphics card), so this should not be an x64, hypertreading or multi-core issue. I am using the free radeon driver, no proprietary drivers.
Symptoms: The screen goes black; mouse pointer remains visible, but not movable; caps-lock light is blinking. When SysRq is on, the machine can be rebooted with Alt+SysRq+b, but other SysRq commands or other keys commands seem to have no effect. After rebooting, the system logs do not contain any unusual entries. The problem occurs randomly and seems not to be correlated to memory load, disk activity or network traffic (internal WLAN is on though). The same problem occurs with Ubuntu 10.04 and Fedora 13, but never with Ubuntu 9.10 or Fedora 12. Therefore, we should probably concentrate on those components that changed from Ubuntu 9.10 to 10.04 *and* from Fedora 12 to 13. -- Ubuntu 10.04 random freezes https://bugs.launchpad.net/bugs/585765 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
