Comment 5 for bug 558721

I also get the same kind of crashes of gnome-screenaver daemon as soon as "gnome-screensaver-command -a" is used. Please note, however, that this happens with a remote X connection to a Sunray. But the stacktrace looks quite similar. I Have started "/usr/bin/gnome-screenaver" with the option "--no-daemon" and then when issuing the "/usr/bin/gnome-screensaver-command -a" command to activate the screensaver the daemon immediately exists with a Segfault. Here is the stacktrace:

-- cut here --
Starting program: /usr/bin/gnome-screensaver --no-daemon
[Thread debugging using libthread_db enabled]

Program received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ?? ()
#1 0x000000000041c6e9 in ?? ()
#2 0x0000000000411ed9 in gs_manager_set_active ()
#3 0x000000000040c028 in ?? ()
#4 0x000000000041d712 in gs_marshal_BOOLEAN__BOOLEAN ()
#5 0x00007ffff4c9b5de in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#6 0x00007ffff4caf598 in ?? () from /usr/lib/libgobject-2.0.so.0
#7 0x00007ffff4cb08b9 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#8 0x00007ffff4cb1033 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#9 0x000000000040e702 in gs_listener_set_active ()
#10 0x000000000040f9ea in ?? ()
#11 0x000000000040ff3c in ?? ()
#12 0x0000000000410482 in ?? ()
#13 0x00007ffff798c3a6 in dbus_connection_dispatch () from /lib/libdbus-1.so.3
#14 0x00007ffff7bc4e45 in ?? () from /usr/lib/libdbus-glib-1.so.2
#15 0x00007ffff41c88c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#16 0x00007ffff41cc748 in ?? () from /lib/libglib-2.0.so.0
#17 0x00007ffff41ccc55 in g_main_loop_run () from /lib/libglib-2.0.so.0
#18 0x00007ffff6e11af7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#19 0x000000000040b893 in main ()
-- cut here --

dmesg also outputs the following segfault information:

-- cut here --
gnome-screensav[13614]: segfault at 0 ip (null) sp 00007fffb654b4c8 error 14 in gnome-screensaver[400000+27000]
-- cut here --

Here some information on the system:

Description: Ubuntu 10.04 LTS
Release: 10.04

gnome-screensaver:
  Installed: 2.30.0-0ubuntu1
  Candidate: 2.30.0-0ubuntu1
  Version table:
 *** 2.30.0-0ubuntu1 0
        500 http://de.archive.ubuntu.com/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status

Linux titan 2.6.32-21-server #32-Ubuntu SMP Fri Apr 16 09:17:34 UTC 2010 x86_64 GNU/Linux