Glad to be able to help :-) I can see from your changes - and also realized it myself - that it's a kernel bug rather than an X bug. I also checked Xorg.0.log.old but it had last been touched at 18:03 so I figured it would be of any use. I'll attach it here anyways.
For your other questions: 1) Haven't tested that. Will do. 2+3) Neither does anything. 4) Haven't tried that yet but sometimes I have been able to reboot with Alt+SysRq+s followed by Alt+SysRq+b. 5) Is that some Magic SysReq combo? I'll download mainline soonish. Is that the kernel that will be used in later updates? ** Attachment added: "Xorg.0.log.old.txt" http://launchpadlibrarian.net/49489977/Xorg.0.log.old.txt -- [865g] X locks up solid with HD thrashing https://bugs.launchpad.net/bugs/585734 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs