I have a similar problem - x11 crashes several times a week. I also use an external screen on my laptop. I have an nVidia NVS 3100M, driver version 275.09.07. Xorg version 1.7.6 (10706000).
Backtrace: 0: /usr/bin/X (xorg_backtrace+0x28) [0x45fcc8] 1: /usr/bin/X (0x400000+0x5dfbd) [0x45dfbd] 2: /lib/libpthread.so.0 (0x7f485defc000+0xf8f0) [0x7f485df0b8f0] 3: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f48581ae000+0x32b60d) [0x7f48584d960d] 4: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f48581ae000+0x32be60) [0x7f48584d9e60] 5: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f48581ae000+0x32c11e) [0x7f48584da11e] 6: /usr/bin/X (FreeResource+0x140) [0x44faf0] 7: /usr/lib/xorg/modules/drivers/nvidia_drv.so (0x7f48581ae000+0x32c469) [0x7f48584da469] 8: /usr/lib/xorg/modules/extensions/libdbe.so (0x7f485bae5000+0x1d0a) [0x7f485bae6d0a] 9: /usr/bin/X (0x400000+0xb3e1c) [0x4b3e1c] 10: /usr/bin/X (0x400000+0x2b88d) [0x42b88d] 11: /usr/bin/X (DeleteWindow+0x223) [0x42d993] 12: /usr/bin/X (FreeClientResources+0xd3) [0x44f613] 13: /usr/bin/X (CloseDownClient+0x60) [0x43f930] 14: /usr/bin/X (0x400000+0x44020) [0x444020] 15: /usr/bin/X (0x400000+0x261aa) [0x4261aa] 16: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7f485cbf3c4d] 17: /usr/bin/X (0x400000+0x25d59) [0x425d59] Segmentation fault at address 0x28 This is _extremely_ annoying as I lose my open applications and unsaved work every single time. ** Attachment added: "Xorg log" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/812885/+attachment/2229568/+files/Xorg.0.log.old -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/812885 Title: Xorg crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/812885/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
