I found and tried out a fix and made up my own version of it. I noticed that Xorg.0.log.old gave the following. Segmentation fault at address 0xb6211008 Caught signal 11 (Segmentation fault). Server aborting
Googling for "Caught signal 11 (Segmentation fault). Server aborting" shows that Archlinux has had this issue too (https://bbs.archlinux.org/viewtopic.php?id=119442). Based on that, the following work-around works for me. Create /usr/share/X11/xorg.conf.d/10-modules.conf with the following content. Section "Module" Disable "record" EndSection Otherwise (my way) Log out, then from a tty, kill lightdm, and issue sudo Xorg -configure or sudo X -configure. In the resulting xorg.conf, make sure to Disable "record" rather than just comment the line out. Copy it to /etc/X11/ Restart lightdm Log into X (although it didn't take for me till I logged out and back into X yet again, so you may just want to reboot). The result: no more crashes and X seems a little more responsive, although this may be in my mind. There's an error pop up at the start of the X session about the record function not working, but that is expected. So I assume that may the the problematic software. I also noticed that Xorg.0.log and other logs give me the following error. (EE) Failed to load module "fglrx" (module does not exist, 0) I thought it might be unimportant if it weren't for a segmentation fault linked to fglrx reported at http://phoronix.com/forums/showthread.php?22972-Ubuntu-10.04-fglrx-seg- fault. I'll write it up as a separate bug, anyway since Ubuntu borked my fglrx install . So how's that for incomplete? A workaround and potential sources of the bug are ID'd. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/888872 Title: Unity 3D desktop crashes in Oneiric using ATI Mobility Radeon X1600 To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/888872/+subscriptions _______________________________________________ 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