gnome-panel crashed with SIGSEGV in g_type_check_instance_cast()

[Chad Waters]

Binary package hint: gnome-panel

gnome-panel 2.23.6 crash and restarted an hour or so into session.

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 8.10
ExecutablePath: /usr/bin/gnome-panel
Package: gnome-panel 1:2.23.6-0ubuntu1
ProcAttrCurrent: unconfined
ProcCmdline: gnome-panel
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: gnome-panel
StacktraceTop:
 g_type_check_instance_cast ()
 ?? () from /usr/lib/libgtk-x11-2.0.so.0
 ?? () from /usr/lib/libgtk-x11-2.0.so.0
 gtk_widget_queue_resize () from /usr/lib/libgtk-x11-2.0.so.0
 gtk_image_set_from_pixbuf ()
Title: gnome-panel crashed with SIGSEGV in g_type_check_instance_cast()
Uname: Linux 2.6.26-5-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video

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[Pedro Villavicencio (pedro)]

Thanks for your bug report. Please try to obtain a backtrace http://wiki.ubuntu.com/DebuggingProgramCrash and attach the file to the bug report. This will greatly help us in tracking down your problem.

[Darius Regnier (darius-regnier)]

This happened to me too. The panel dissapeared, the login sound played, and then the panel reappeared. There is 100% reproducability (at least for me) because this happens EVERY time I switch NVIDIA accelerated graphics drivers (between 173 and 177)

[Sebastien Bacher (seb128)]

do you get the issue when using the nv open source drivers?

[Darius Regnier (darius-regnier)]

Do you mean package "nvidia-glx-envy"? I didn't try to install it because when I do, it says one of the packages it wants me to remove is "ubuntu-desktop" which I'm pretty sure I kinda need.

[Sebastien Bacher (seb128)]

no, I meant to edit the xorg configuration to use the opensource driver, you should be able to use jockey-gtk to disable the nivdia one

[Chad Waters (chad)]

hi, original reporter here: my X is pulling the intel driver via auto config (no xorg.conf).

The crash happened once and I haven't seen it again in a days use. The only thing I was doing at the time was browsing with firefox 3.0. I can't narrow down any particular action beyond that.

If it happens again, I'll try to pinpoint it and and reproduce it for a dump.

[Darius Regnier (darius-regnier)]

Sorry SB, how would a person go about editing xorg.conf to use the opensource driver? (I know what and where it is, I just don't know what to change)
As for Hardware Drivers (jockey-gtk), the only options I see are the 173 and 177 NVIDIA (nonfree) drivers (see screenshot)

[Sebastien Bacher (seb128)]

don't bother, the bug is not likely to be nvidia specific, do you get it every time after login?

[Sebastien Bacher (seb128)]

the issue seems to be bug #255644 and has been fixed today in intrepid, you just need to update

[Darius Regnier (darius-regnier)]

Hey, I don't know if this fixed this for everyone else but it didn't for me, so assuming it was a different issue I started bug #255883.