The last two times it happened when I was copying text with Ctrl-c. Right after pressing the keys, the log-off occurred.
Xorg.0.log ends with these lines: Backtrace: 0: /usr/bin/X(xorg_backtrace+0x3b) [0x8133d6b] 1: /usr/bin/X(xf86SigHandler+0x55) [0x80c7d35] 2: [0xaf3400] 3: /usr/bin/X(xf86AccResFromOS+0x45) [0x80b8c55] 4: /usr/bin/X(xf86ResourceBrokerInit+0x2f) [0x80be7bf] 5: /usr/bin/X(InitOutput+0x19a) [0x80b026a] 6: /usr/bin/X(main+0x1cb) [0x807234b] 7: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6) [0x249b56] 8: /usr/bin/X [0x80719c1] Saw signal 11. Server aborting. ddxSigGiveUp: Closing log Something similar is going on here: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics- drivers-180/+bug/506069 -- GDM logs out / disconnects user randomly https://bugs.launchpad.net/bugs/511095 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
