The suggestion of using 2.6.31-10-rt prompted me to give 2.6.32-22-preempt a try. While I was impressed with how responsive the desktop seemed with a mix of high CPU load tasks going on in the background, it still failed the torture test and locked up.... this time with the return of both the "do_IRQ: 0.177 No irq handler for vector (irq -1)" and "BUG: soft lockup - CPU#1 stuck for 61s! [ghb:9719]" just before the freeze.
The system was a little more responsive while it was freezing... I was even able to switch desktops and try other apps. Firefox, Handbrake and System Monitor locked up right away (grey windows) - I'm guessing they were on CPU 1, the one which experienced the soft lockup. The desktop CPU load widget showed CPU 1 at 100% Other apps. seemed okay briefly but ultimately everything locked solid within a couple of minutes, although I was able to reboot with SysRq+REISUB. I did get quite a lot of info in kern.log this time... the fun starts at line 1003. I'll give 2.6.31-10-rt a try in the next couple of days. ** Attachment added: "kern.log" http://launchpadlibrarian.net/49801638/kern.log -- 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
