Public bug reported:
Binary package hint: gnome-screensaver
Issue: Gnome-screensaver-dialog doesn't appear
Moving the mouse or typing when the screen is locked shows me the mouse
cursor momentarily, then disappears again, without ever showing the
password dialog.
Attempting to run gnome-screensaver-dialog directly results in:
The program 'gnome-screensaver-dialog' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadClass, invalid event class'.
(Details: serial 269 error_code 172 request_code 148 minor_code 6)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line
option to change this behavior. You can then get a meaningful
backtrace from your debugger if you break on the gdk_x_error() function.)
Program exited with code 01.
I'm running gnome-screensaver 2.24.0-0ubuntu6 on jaunty.
I rebuilt the gnome-screensaver with debugging symbols, and ran:
gdb --args gnome-screensaver-daemon --sync
with "break gdk_x_error" as suggested produces the following backtrace:
#1 0x00007fd68e5d8861 in xkl_process_error () from /usr/lib/libxklavier.so.12
#2 0x00007fd68d1045b4 in _XError () from /usr/lib/libX11.so.6
#3 0x00007fd68d10b8f9 in ?? () from /usr/lib/libX11.so.6
#4 0x00007fd68d10bfd8 in _XReply () from /usr/lib/libX11.so.6
#5 0x00007fd68d0ffe13 in XSync () from /usr/lib/libX11.so.6
#6 0x00007fd68d0fffcb in ?? () from /usr/lib/libX11.so.6
#7 0x00007fd6891657d8 in XSelectExtensionEvent () from /usr/lib/libXi.so.6
#8 0x00007fd68e5dc646 in xkl_xkb_resume_listen () from
/usr/lib/libxklavier.so.12
#9 0x00007fd68e5d865f in xkl_engine_resume_listen () from
/usr/lib/libxklavier.so.12
#10 0x00007fd68e5d86c1 in xkl_engine_start_listen () from
/usr/lib/libxklavier.so.12
#11 0x00007fd68ec376b8 in ?? () from /usr/lib/libgnomekbdui.so.3
#12 0x00007fd68a694e15 in g_type_create_instance () from
/usr/lib/libgobject-2.0.so.0
#13 0x00007fd68a6795bb in ?? () from /usr/lib/libgobject-2.0.so.0
#14 0x00007fd68a679c03 in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#15 0x00007fd68a67a747 in g_object_new_valist () from
/usr/lib/libgobject-2.0.so.0
#16 0x00007fd68a67a88c in g_object_new () from /usr/lib/libgobject-2.0.so.0
#17 0x00007fd68ec36faa in gkbd_indicator_new () from /usr/lib/libgnomekbdui.so.3
#18 0x000000000040b27b in gs_lock_plug_init (plug=0xffc010) at
gs-lock-plug.c:1806
#19 0x00007fd68a694e15 in g_type_create_instance () from
/usr/lib/libgobject-2.0.so.0
#20 0x00007fd68a6795bb in ?? () from /usr/lib/libgobject-2.0.so.0
#21 0x00007fd68a679c03 in g_object_newv () from /usr/lib/libgobject-2.0.so.0
#22 0x00007fd68a67a747 in g_object_new_valist () from
/usr/lib/libgobject-2.0.so.0
#23 0x00007fd68a67a88c in g_object_new () from /usr/lib/libgobject-2.0.so.0
#24 0x00000000004085a2 in gs_lock_plug_new () at gs-lock-plug.c:1941
#25 0x00000000004077b6 in popup_dialog_idle () at gnome-screensaver-dialog.c:368
#26 0x00007fd68a3dc20a in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#27 0x00007fd68a3df8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#28 0x00007fd68a3dfdad in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#29 0x00007fd68cbfbbc7 in IA__gtk_main () at
/build/buildd/gtk+2.0-2.16.1/gtk/gtkmain.c:1205
#30 0x0000000000407756 in main (argc=1, argv=0x7fff9870ab98) at
gnome-screensaver-dialog.c:576
This was working fine on the machine a couple of weeks ago, but there
was a power outage. Ever since the machine rebooted, locked sessions are
impossible to unlock without logging in on a terminal and manually
killing gnome-screensaver.
** Affects: gnome-screensaver (Ubuntu)
Importance: Undecided
Status: New
--
Unlock window doesn't show; gnome-screensaver-dialog crashes
https://bugs.launchpad.net/bugs/405543
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