Hm, I still get the crash with after either adding or removing the second user from admin. Unfortunately the stack trace is still mostly useless:
(polkit-gnome-authentication-agent-1:16940): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed Program received signal SIGSEGV, Segmentation fault. 0x00007ffff66d73c6 in ?? () from /lib/libc.so.6 (gdb) bt #0 0x00007ffff66d73c6 in ?? () from /lib/libc.so.6 #1 0x00007ffff66d97ee in malloc () from /lib/libc.so.6 #2 0x00007ffff28d40f2 in ?? () from /usr/lib/libxcb.so.1 #3 0x00007ffff28d42c8 in xcb_poll_for_event () from /usr/lib/libxcb.so.1 #4 0x00007ffff5eba9bd in ?? () from /usr/lib/libX11.so.6 #5 0x00007ffff5ebb257 in _XEventsQueued () from /usr/lib/libX11.so.6 #6 0x00007ffff5ea3f9d in XPending () from /usr/lib/libX11.so.6 #7 0x00007ffff640c6d8 in ?? () from /usr/lib/libgdk-x11-2.0.so.0 #8 0x00007ffff6a0ca9a in IA__g_main_context_check (context=0x64fec0, max_priority=2147483647, fds=<value optimized out>, n_fds=32767) at /build/buildd/glib2.0-2.22.0/glib/gmain.c:2469 #9 0x00007ffff6a0d280 in g_main_context_iterate (context=0x64fec0, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at /build/buildd/glib2.0-2.22.0/glib/gmain.c:2588 #10 0x00007ffff6a0d9e5 in IA__g_main_loop_run (loop=0x6a3380) at /build/buildd/glib2.0-2.22.0/glib/gmain.c:2799 #11 0x0000000000407e98 in main (argc=1, argv=0x7fffffffe628) at main.c:255 (gdb) bt full #0 0x00007ffff66d73c6 in ?? () from /lib/libc.so.6 No symbol table info available. #1 0x00007ffff66d97ee in malloc () from /lib/libc.so.6 No symbol table info available. #2 0x00007ffff28d40f2 in ?? () from /usr/lib/libxcb.so.1 No symbol table info available. #3 0x00007ffff28d42c8 in xcb_poll_for_event () from /usr/lib/libxcb.so.1 No symbol table info available. #4 0x00007ffff5eba9bd in ?? () from /usr/lib/libX11.so.6 No symbol table info available. #5 0x00007ffff5ebb257 in _XEventsQueued () from /usr/lib/libX11.so.6 No symbol table info available. #6 0x00007ffff5ea3f9d in XPending () from /usr/lib/libX11.so.6 No symbol table info available. #7 0x00007ffff640c6d8 in ?? () from /usr/lib/libgdk-x11-2.0.so.0 No symbol table info available. #8 0x00007ffff6a0ca9a in IA__g_main_context_check (context=0x64fec0, max_priority=2147483647, fds=<value optimized out>, n_fds=32767) at /build/buildd/glib2.0-2.22.0/glib/gmain.c:2469 result = <value optimized out> check = 0x20 source = 0x64fe40 pollrec = <value optimized out> n_ready = 0 i = <value optimized out> #9 0x00007ffff6a0d280 in g_main_context_iterate (context=0x64fec0, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at /build/buildd/glib2.0-2.22.0/glib/gmain.c:2588 max_priority = 2147483647 timeout = -1 some_ready = <value optimized out> nfds = 3 allocated_nfds = -157179600 fds = 0x8db4c0 __PRETTY_FUNCTION__ = "g_main_context_iterate" #10 0x00007ffff6a0d9e5 in IA__g_main_loop_run (loop=0x6a3380) at /build/buildd/glib2.0-2.22.0/glib/gmain.c:2799 self = 0x631180 __PRETTY_FUNCTION__ = "IA__g_main_loop_run" #11 0x0000000000407e98 in main (argc=1, argv=0x7fffffffe628) at main.c:255 ret = 0 loop = 0x6a3380 listener = 0x6ab2a0 error = 0x0 ** Changed in: policykit-1-gnome (Ubuntu) Status: New => Incomplete -- No user pre-selected in authentication dialog https://bugs.launchpad.net/bugs/435227 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs