I think we can mark this as solved. Based on this article: http://magazine.redhat.com/2007/11/20/tips-and-tricks-why-does-xorgs-cpu-usage-shoot-up-when-using-nvidias-driver/ I changed my xorg.conf file by adding to the "Device" section Option "UseEvents" "true"
I don't know what that option is defaulted to off. In other words, I don't know what the possible downside is to changing this option as I did, but since I made the change on the weekend I've had over 2 days uptime. I know that may not seem like much, but I never had anything over 4 hours before, so I'm pretty sure that my problem's fixed. I've attached complete xorg.conf for reference. I suspect that this fix would have closed bug #435011 as well (and possibly Bug #434416 since it's so similar) but I haven't tested. Cheers, Dave ** Attachment added: "xorg.conf" http://launchpadlibrarian.net/35808738/xorg.conf -- computer freeze, xorg at 100% CPU https://bugs.launchpad.net/bugs/466937 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