Also happens to me all the time in Feisty. I managed to obtain following
backtrace:
Starting program: /usr/bin/gnome-session
[Thread debugging using libthread_db enabled]
[New Thread -1225742128 (LWP 24589)]
[New Thread -1253708912 (LWP 24603)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1225742128 (LWP 24589)]
0xb7627f0b in _int_malloc () from /lib/tls/i686/cmov/libc.so.6
(gdb)
(gdb) thread apply all bt
Thread 2 (Thread -1253708912 (LWP 24603)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb784018b in ?? () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7738a4d in child_watch_helper_thread (data=0x0) at gmain.c:3703
#3 0xb7755b7f in g_thread_create_proxy (data=0x825ced0) at gthread.c:591
#4 0xb783931b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5 0xb768f57e in clone () from /lib/tls/i686/cmov/libc.so.6
Thread 1 (Thread -1225742128 (LWP 24589)):
#0 0xb7627f0b in _int_malloc () from /lib/tls/i686/cmov/libc.so.6
#1 0xb762960e in malloc () from /lib/tls/i686/cmov/libc.so.6
#2 0xb773f093 in IA__g_try_malloc (n_bytes=4096) at gmem.c:196
#3 0xb7a7b044 in IA__gdk_pixbuf_new (colorspace=GDK_COLORSPACE_RGB,
has_alpha=4, bits_per_sample=8, width=32, height=32) at gdk-pixbuf.c:269
#4 0xb6053c54 in gdk_pixbuf__png_image_load (f=0x829f100, error=0x0)
at io-png.c:304
#5 0xb7a7ee90 in _gdk_pixbuf_generic_image_load (module=0x80ee5f0,
f=0x829f100, error=0x0) at gdk-pixbuf-io.c:793
#6 0xb7a7ff04 in IA__gdk_pixbuf_new_from_file (
filename=0x8238cc8
"/usr/share/icons/Tango/32x32/apps/gnome-window-manager.png", error=0x0) at
gdk-pixbuf-io.c:906
#7 0x0805cf4e in get_splash_icon (sw=<value optimized out>,
icon_name=0x8066635 "gnome-window-manager") at splash-widget.c:438
#8 0x0805d62d in splash_widget_add_icon (sw=0x8237020,
executable_name=0x829d6a0 "metacity") at splash-widget.c:537
#9 0x0805d803 in splash_update (text=0x829d6a0 "metacity")
at splash-widget.c:687
#10 0x08052d8d in run_command_prop (client=0x82287c0,
command=0x8064112 "RestartCommand", prop=<value optimized out>)
at manager.c:415
#11 0x08052fa0 in start_client (client=0x82287c0) at manager.c:644
#12 0x0805499f in client_clean_up (client=<value optimized out>)
at manager.c:1746
#13 0x08055ca1 in ice_watch (connection=0x829d628, client_data=0x0, opening=0,
watch_data=0x82231f4) at ice.c:212
#14 0xb7eb02dc in _IceConnectionClosed (iceConn=0x829d628)
at ../../src/watch.c:193
#15 0xb7eb0122 in IceCloseConnection (iceConn=0x829d628)
at ../../src/shutdown.c:132
#16 0xb7f01698 in process_ice_messages (source=0x82286d8, condition=17,
data=0x829d628) at gnome-ice.c:73
#17 0xb776140d in g_io_unix_dispatch (source=0x8247bc0,
callback=0xb7f015d0 <process_ice_messages>, user_data=0x829d628)
at giounix.c:162
#18 0xb7737df2 in IA__g_main_context_dispatch (context=0x808b740)
at gmain.c:2045
#19 0xb773adcf in g_main_context_iterate (context=0x808b740, block=1,
dispatch=1, self=0x808cb48) at gmain.c:2677
#20 0xb773b179 in IA__g_main_loop_run (loop=0x80c7cc0) at gmain.c:2881
#21 0xb7c6f044 in IA__gtk_main () at gtkmain.c:1177
#22 0x0805638e in main (argc=) at main.c:547
(gdb)
Thread 2 (Thread -1253708912 (LWP 24603)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb784018b in ?? () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7738a4d in child_watch_helper_thread (data=0x0) at gmain.c:3703
#3 0xb7755b7f in g_thread_create_proxy (data=0x825ced0) at gthread.c:591
#4 0xb783931b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5 0xb768f57e in clone () from /lib/tls/i686/cmov/libc.so.6
Thread 1 (Thread -1225742128 (LWP 24589)):
#0 0xb7627f0b in _int_malloc () from /lib/tls/i686/cmov/libc.so.6
#1 0xb762960e in malloc () from /lib/tls/i686/cmov/libc.so.6
#2 0xb773f093 in IA__g_try_malloc (n_bytes=4096) at gmem.c:196
#3 0xb7a7b044 in IA__gdk_pixbuf_new (colorspace=GDK_COLORSPACE_RGB,
has_alpha=4, bits_per_sample=8, width=32, height=32) at gdk-pixbuf.c:269
#4 0xb6053c54 in gdk_pixbuf__png_image_load (f=0x829f100, error=0x0)
at io-png.c:304
#5 0xb7a7ee90 in _gdk_pixbuf_generic_image_load (module=0x80ee5f0,
f=0x829f100, error=0x0) at gdk-pixbuf-io.c:793
#6 0xb7a7ff04 in IA__gdk_pixbuf_new_from_file (
filename=0x8238cc8
"/usr/share/icons/Tango/32x32/apps/gnome-window-manager.png", error=0x0) at
gdk-pixbuf-io.c:906
#7 0x0805cf4e in get_splash_icon (sw=<value optimized out>,
icon_name=0x8066635 "gnome-window-manager") at splash-widget.c:438
#8 0x0805d62d in splash_widget_add_icon (sw=0x8237020,
executable_name=0x829d6a0 "metacity") at splash-widget.c:537
#9 0x0805d803 in splash_update (text=0x829d6a0 "metacity")
at splash-widget.c:687
#10 0x08052d8d in run_command_prop (client=0x82287c0,
command=0x8064112 "RestartCommand", prop=<value optimized out>)
at manager.c:415
#11 0x08052fa0 in start_client (client=0x82287c0) at manager.c:644
#12 0x0805499f in client_clean_up (client=<value optimized out>)
at manager.c:1746
#13 0x08055ca1 in ice_watch (connection=0x829d628, client_data=0x0, opening=0,
watch_data=0x82231f4) at ice.c:212
#14 0xb7eb02dc in _IceConnectionClosed (iceConn=0x829d628)
at ../../src/watch.c:193
#15 0xb7eb0122 in IceCloseConnection (iceConn=0x829d628)
at ../../src/shutdown.c:132
#16 0xb7f01698 in process_ice_messages (source=0x82286d8, condition=17,
data=0x829d628) at gnome-ice.c:73
#17 0xb776140d in g_io_unix_dispatch (source=0x8247bc0,
callback=0xb7f015d0 <process_ice_messages>, user_data=0x829d628)
at giounix.c:162
#18 0xb7737df2 in IA__g_main_context_dispatch (context=0x808b740)
at gmain.c:2045
#19 0xb773adcf in g_main_context_iterate (context=0x808b740, block=1,
dispatch=1, self=0x808cb48) at gmain.c:2677
#20 0xb773b179 in IA__g_main_loop_run (loop=0x80c7cc0) at gmain.c:2881
#21 0xb7c6f044 in IA__gtk_main () at gtkmain.c:1177
#22 0x0805638e in main (argc=) at main.c:547
(gdb)
Thread 2 (Thread -1253708912 (LWP 24603)):
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb784018b in ?? () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7738a4d in child_watch_helper_thread (data=0x0) at gmain.c:3703
#3 0xb7755b7f in g_thread_create_proxy (data=0x825ced0) at gthread.c:591
#4 0xb783931b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5 0xb768f57e in clone () from /lib/tls/i686/cmov/libc.so.6
Thread 1 (Thread -1225742128 (LWP 24589)):
#0 0xb7627f0b in _int_malloc () from /lib/tls/i686/cmov/libc.so.6
#1 0xb762960e in malloc () from /lib/tls/i686/cmov/libc.so.6
#2 0xb773f093 in IA__g_try_malloc (n_bytes=4096) at gmem.c:196
#3 0xb7a7b044 in IA__gdk_pixbuf_new (colorspace=GDK_COLORSPACE_RGB,
has_alpha=4, bits_per_sample=8, width=32, height=32) at gdk-pixbuf.c:269
#4 0xb6053c54 in gdk_pixbuf__png_image_load (f=0x829f100, error=0x0)
at io-png.c:304
#5 0xb7a7ee90 in _gdk_pixbuf_generic_image_load (module=0x80ee5f0,
f=0x829f100, error=0x0) at gdk-pixbuf-io.c:793
#6 0xb7a7ff04 in IA__gdk_pixbuf_new_from_file (
filename=0x8238cc8
"/usr/share/icons/Tango/32x32/apps/gnome-window-manager.png", error=0x0) at
gdk-pixbuf-io.c:906
#7 0x0805cf4e in get_splash_icon (sw=<value optimized out>,
icon_name=0x8066635 "gnome-window-manager") at splash-widget.c:438
#8 0x0805d62d in splash_widget_add_icon (sw=0x8237020,
executable_name=0x829d6a0 "metacity") at splash-widget.c:537
#9 0x0805d803 in splash_update (text=0x829d6a0 "metacity")
at splash-widget.c:687
#10 0x08052d8d in run_command_prop (client=0x82287c0,
command=0x8064112 "RestartCommand", prop=<value optimized out>)
at manager.c:415
#11 0x08052fa0 in start_client (client=0x82287c0) at manager.c:644
#12 0x0805499f in client_clean_up (client=<value optimized out>)
at manager.c:1746
#13 0x08055ca1 in ice_watch (connection=0x829d628, client_data=0x0, opening=0,
watch_data=0x82231f4) at ice.c:212
#14 0xb7eb02dc in _IceConnectionClosed (iceConn=0x829d628)
at ../../src/watch.c:193
#15 0xb7eb0122 in IceCloseConnection (iceConn=0x829d628)
at ../../src/shutdown.c:132
#16 0xb7f01698 in process_ice_messages (source=0x82286d8, condition=17,
data=0x829d628) at gnome-ice.c:73
#17 0xb776140d in g_io_unix_dispatch (source=0x8247bc0,
callback=0xb7f015d0 <process_ice_messages>, user_data=0x829d628)
at giounix.c:162
#18 0xb7737df2 in IA__g_main_context_dispatch (context=0x808b740)
at gmain.c:2045
#19 0xb773adcf in g_main_context_iterate (context=0x808b740, block=1,
dispatch=1, self=0x808cb48) at gmain.c:2677
#20 0xb773b179 in IA__g_main_loop_run (loop=0x80c7cc0) at gmain.c:2881
#21 0xb7c6f044 in IA__gtk_main () at gtkmain.c:1177
#22 0x0805638e in main (argc=) at main.c:547
(gdb) quit
The program is running. Exit anyway? (y or n) Please answer y or n.
The program is running. Exit anyway? (y or n) alarm-notify.c:368
(alarm_notify_new) - Alarm Notify New
alarm-notify.c:304 (alarm_channel_setup) - Channel Setup
alarm-notify.c:243 (alarm_notify_init) - Initing Alarm Notify
alarm-queue.c:1875 (alarm_queue_init)
alarm-queue.c:218 (queue_midnight_refresh) - Refresh at Wed Apr 18 02:00:00 2007
--
[apport] gnome-session crashed with SIGSEGV
https://bugs.launchpad.net/bugs/95116
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