I have been able to reproduce the crash (even though it does not happen every time, and seems to happen less than half the time). Also, I have just realized that the crash occurs not when selecting a resolution from the drop-down menu, but rather than initially attempting to expand the drop-down menu (by clicking on it). I will edit the bug report's description to reflect these facts, but I wanted to document the change here (mainly for people who have already read the bug report).
** Description changed: Binary package hint: gnome-control-center While running from today's daily live (i.e. desktop) natty CD (md5sum 5f1c4376fb3c42742627d9f77e83547e), with gnome-control-center 1:2.32.1-0ubuntu5, I opened System > Preferences > Monitors (i.e. gnome- display-properties) and successfully changed the resolution from 1024x768 to 800x600, since I am using the live CD to install Natty on a virtual machine, and I wanted the virtual machine's "screen" to fit more comfortably on the host desktop. - After finding bug 729057, I opened System > Preferences > Monitors - again, with the intention of changing the screen resolution back to - 1024x768 as a workaround. However, when I selected that resolution, this - crash occurred. + After finding bug 729057 (which is a duplicate of bug 727905), I opened + System > Preferences > Monitors again, with the intention of changing + the screen resolution back to 1024x768 as a workaround. However, when I + attempted to expand the drop-down menu of resolutions (by clicking on + it), this crash occurred. - I am unable to reproduce this bug by re-entering gnome-display- - properties; my subsequent attempt to change the resolution back to - 1024x768 was successful. + I was initially unable to reproduce this bug by re-entering gnome- + display-properties; my subsequent attempt to change the resolution back + to 1024x768 was successful. However, I have since attempted to change + the resolution, sometimes with success, and sometimes without success + (i.e. reproducing this crash, though on the same machine in the very + same login session, running from the live CD). ProblemType: Crash DistroRelease: Ubuntu 11.04 Package: gnome-control-center 1:2.32.1-0ubuntu5 ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6 Uname: Linux 2.6.38-5-generic i686 Architecture: i386 Date: Fri Mar 4 13:14:41 2011 ExecutablePath: /usr/bin/gnome-display-properties LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110304) ProcCmdline: gnome-display-properties ProcEnviron: LANGUAGE=en_US:en LANG=en_US.UTF-8 SHELL=/bin/bash SegvAnalysis: Segfault happened at: 0xaecaa4 <g_object_set+36>: cmpl $0x50,(%eax) PC (0x00aecaa4) ok source "$0x50" ok destination "(%eax)" (0x00000028) not located in a known VMA region (needed writable region)! SegvReason: writing NULL VMA Signal: 11 SourcePackage: gnome-control-center StacktraceTop: g_object_set () from /usr/lib/libgobject-2.0.so.0 ?? () from /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so ?? () from /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so g_simple_async_result_complete () from /usr/lib/libgio-2.0.so.0 ?? () from /usr/lib/libgio-2.0.so.0 Title: gnome-display-properties crashed with SIGSEGV in g_object_set() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare XsessionErrors: (nautilus:4274): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/729065 Title: gnome-display-properties crashed with SIGSEGV in g_object_set() -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
