OK, some more logs :
Backtrace: [ 16873.909] 0: /usr/bin/X (xorg_backtrace+0x26) [0x566f66] [ 16873.909] 1: /usr/bin/X (0x400000+0x16abca) [0x56abca] [ 16873.909] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fdfc9ffa000+0x10060) [0x7fdfca00a060] [ 16873.909] 3: /usr/lib/xorg/modules/extensions/librecord.so (0x7fdfc7991000+0x2698) [0x7fdfc7993698] [ 16873.909] 4: /usr/bin/X (_CallCallbacks+0x34) [0x438404] [ 16873.910] 5: /usr/bin/X (WriteToClient+0x21a) [0x56a35a] [ 16873.910] 6: /usr/lib/xorg/modules/extensions/libdri2.so (ProcDRI2WaitMSCReply+0x52) [0x7fdfc7378cd2] [ 16873.910] 7: /usr/lib/xorg/modules/extensions/libdri2.so (DRI2WaitMSCComplete+0x53) [0x7fdfc7377403] [ 16873.910] 8: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7fdfc7124000+0x25f54) [0x7fdfc7149f54] [ 16873.910] 9: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmHandleEvent+0xa3) [0x7fdfc75823a3] [ 16873.910] 10: /usr/bin/X (WakeupHandler+0x6b) [0x437c0b] [ 16873.910] 11: /usr/bin/X (WaitForSomething+0x1b6) [0x564366] [ 16873.910] 12: /usr/bin/X (0x400000+0x33a82) [0x433a82] [ 16873.910] 13: /usr/bin/X (0x400000+0x22f6a) [0x422f6a] [ 16873.910] 14: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7fdfc8f2030d] [ 16873.910] 15: /usr/bin/X (0x400000+0x2325d) [0x42325d] [ 16873.910] Segmentation fault at address 0x7fdfc192f010 [ 16873.910] Caught signal 11 (Segmentation fault). Server aborting [ 16873.910] Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 16873.910] Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 16873.910] [ 16874.012] (II) evdev: Power Button: Close [ 16874.012] (II) UnloadModule: "evdev" [ 16874.012] (II) Unloading evdev [ 16874.052] (II) evdev: Video Bus: Close [ 16874.052] (II) UnloadModule: "evdev" [ 16874.052] (II) Unloading evdev [ 16874.052] (II) evdev: Video Bus: Close [ 16874.052] (II) UnloadModule: "evdev" [ 16874.052] (II) Unloading evdev [ 16874.052] (II) evdev: Sleep Button: Close [ 16874.052] (II) UnloadModule: "evdev" [ 16874.052] (II) Unloading evdev [ 16874.108] (II) evdev: USB2.0 2.0M UVC WebCam: Close [ 16874.108] (II) UnloadModule: "evdev" [ 16874.108] (II) Unloading evdev [ 16874.112] (II) evdev: Microsoft Microsoft Basic Optical Mouse v2.0 : Close -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/583525 Title: gnome-session: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. Status in “gnome-session” package in Ubuntu: Expired Bug description: Binary package hint: gnome-session I had locked my screen before leaving my computer for a few minutes. When I return, I type in my password to unlock the screen then I get sent back to the login screen. .xsession-errors.old has the errors. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: gnome-session 2.30.0-0ubuntu1 ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2 Uname: Linux 2.6.32-22-generic x86_64 NonfreeKernelModules: nvidia Architecture: amd64 Date: Thu May 20 16:39:02 2010 PackageArchitecture: all ProcEnviron: LANG=en_US.utf8 SHELL=/bin/bash SourcePackage: gnome-session To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/583525/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp