Public bug reported:
When I change the monitor configuration on my newly updated Artful
system I get a desktop crash. A quick reproduction with gdb attached to
gnome-shell gave the following back-trace, unfortunately with symbols
for gnome-shell but not for libmutter (I am still a bit of a new-comer
to gnome-shell).
Thread 1 "gnome-shell" received signal SIGSEGV, Segmentation fault.
0x00007f2b2d75bf50 in meta_monitor_mode_get_resolution ()
from /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
(gdb) bt
#0 0x00007f2b2d75bf50 in meta_monitor_mode_get_resolution ()
at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
#1 0x00007f2b2d75bfd2 in meta_monitor_calculate_mode_scale ()
at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
#2 0x00007f2b2d758437 in meta_finish_monitors_config_migration ()
at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
#3 0x00007f2b2d7558fe in meta_monitor_config_manager_get_stored ()
at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
#4 0x00007f2b2d75d732 in meta_monitor_manager_ensure_configured ()
at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
#5 0x00007f2b2f531f9d in g_closure_invoke ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6 0x00007f2b2f544d5e in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7 0x00007f2b2f54d535 in g_signal_emit_valist ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8 0x00007f2b2f54df4f in g_signal_emit ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9 0x00007f2b2f536464 in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007f2b2f5388b9 in g_object_notify ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007f2b2f531f9d in g_closure_invoke ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007f2b2f544d5e in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#13 0x00007f2b2f54d535 in g_signal_emit_valist ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007f2b2f54df4f in g_signal_emit ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x00007f2b2f536464 in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#16 0x00007f2b2f5388b9 in g_object_notify ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007f2b23f1abbc in () at /usr/lib/x86_64-linux-gnu/libupower-glib.so.3
#18 0x00007f2b291bbe18 in ffi_call_unix64 ()
at /usr/lib/x86_64-linux-gnu/libffi.so.6
#19 0x00007f2b291bb87a in ffi_call () at /usr/lib/x86_64-linux-gnu/libffi.so.6
#20 0x00007f2b2f532799 in g_cclosure_marshal_generic ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#21 0x00007f2b2f531f9d in g_closure_invoke ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007f2b2f5447d8 in () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007f2b2f54d535 in g_signal_emit_valist ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007f2b2f54df4f in g_signal_emit ()
at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007f2b2f83f311 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#26 0x00007f2b2f82e804 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#27 0x00007f2b2f258de5 in g_main_context_dispatch ()
---Type <return> to continue, or q <return> to quit---
at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f2b2f2591b0 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f2b2f2594c2 in g_main_loop_run ()
at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f2b2d79201c in meta_run ()
at /usr/lib/x86_64-linux-gnu/libmutter-1.so.0
#31 0x000056266c5ff307 in main (argc=<optimized out>, argv=<optimized out>)
at ../src/main.c:462
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: libmutter-1-0 3.26.0+20170925~ea214fb-1ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 6 10:03:09 2017
InstallationDate: Installed on 2016-05-31 (492 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: mutter
UpgradeStatus: Upgraded to artful on 2017-10-05 (1 days ago)
** Affects: mutter (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful wayland-session
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https://bugs.launchpad.net/bugs/1721718
Title:
Segmentation fault in meta_monitor_mode_get_resolution
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