Same problem here - only occurring since upgrade to Natty on Dell XPS M1330 with Intel GMA. Seemingly completely random reboot of X, only I'm not dumped to the terminal but back to the X login.
I'm using Gnome rather than Unity. I've attached a log showing the seg fault. Segmentation fault at address 0xa89c470 ** Attachment added: "Xorg.0.log" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/784936/+attachment/2136367/+files/Xorg.0.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/784936 Title: Another person with random x crashes on ubuntu 11.04 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs