Thank you for your bug report, looking to your xsession-errors it seems xorg or gnome-session did hit an issue and nautilus got confused by the broken state, that's not a nautilus bug
** Visibility changed to: Public ** Changed in: nautilus (Ubuntu) Importance: Medium => Low -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nautilus in Ubuntu. https://bugs.launchpad.net/bugs/951375 Title: nautilus crashed with SIGSEGV in gdk_window_get_screen() [ubuntu 12.04] Status in “nautilus” package in Ubuntu: New Bug description: Ubuntu 12.04 (upgraded from 11.10). Configured separate screen with nvidia-settings utility. After reboot one of the screens appears blank white with X cursor. When I'm clicked in area of that screen nautilus crashed, but somehow on them appeared my wallpaper. ProblemType: Crash DistroRelease: Ubuntu 12.04 Package: nautilus 1:3.3.91-0ubuntu4 ProcVersionSignature: Ubuntu 3.2.0-18.28-generic-pae 3.2.9 Uname: Linux 3.2.0-18-generic-pae i686 NonfreeKernelModules: nvidia ApportVersion: 1.94.1-0ubuntu2 Architecture: i386 Date: Sat Mar 10 13:52:08 2012 ExecutablePath: /usr/bin/nautilus GsettingsChanges: org.gnome.nautilus.window-state geometry '800x550+230+160' InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) ProcCmdline: nautilus -n SegvAnalysis: Segfault happened at: 0xb6e5f6e3 <gdk_window_get_screen+35>: cmp %eax,(%edx) PC (0xb6e5f6e3) ok source "%eax" ok destination "(%edx)" (0x3375c085) not located in a known VMA region (needed writable region)! SegvReason: writing unknown VMA Signal: 11 SourcePackage: nautilus StacktraceTop: gdk_window_get_screen () from /usr/lib/i386-linux-gnu/libgdk-3.so.0 gdk_device_get_position () from /usr/lib/i386-linux-gnu/libgdk-3.so.0 ?? () from /usr/lib/i386-linux-gnu/libgtk-3.so.0 gtk_menu_popup_for_device () from /usr/lib/i386-linux-gnu/libgtk-3.so.0 gtk_menu_popup () from /usr/lib/i386-linux-gnu/libgtk-3.so.0 Title: nautilus crashed with SIGSEGV in gdk_window_get_screen() UpgradeStatus: Upgraded to precise on 2012-03-09 (0 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/951375/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

