#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
  [Error: raise.c was not found in source tree]
#1  0x00007fd67c4f03aa in __GI_abort () at abort.c:89
  [Error: abort.c was not found in source tree]
#2  0x00007fd67ce16ec5 in g_assertion_message () from /tmp/apport_sandbox_PBPbvQ/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd67ce16f5a in g_assertion_message_expr () from /tmp/apport_sandbox_PBPbvQ/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00005630f9925373 in gpm_kbd_backlight_on_dbus_signal (proxy=<optimized out>, sender_name=<optimized out>, signal_name=0x5630fa8817f0 "BrightnessChangedWithSource", parameters=0x5630fa9280a0, user_data=<optimized out>) at gpm-kbd-backlight.c:329
  324:        g_variant_get (parameters, "(i)", &value);
  325:        gpm_kbd_backlight_on_brightness_changed (backlight, value);
  326:        return;
  327:    }
  328: 
  329:    g_assert_not_reached ();
  330: }
  331: 
  332: /**
  333:  * gpm_kbd_backlight_dbus_method_call:
  334:  * @connection:
#5  0x00007fd676fb3e18 in ffi_call_unix64 () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libffi.so.6
#6  0x00007fd676fb387a in ffi_call () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libffi.so.6
#7  0x00007fd67d0ca89e in g_cclosure_marshal_generic () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007fd67d0ca065 in g_closure_invoke () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007fd67d0dc7b2 in signal_emit_unlocked_R () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#10 0x00007fd67d0e540c in g_signal_emit_valist () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#11 0x00007fd67d0e57ef in g_signal_emit () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007fd67d5fc8ac in on_signal_received () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#13 0x00007fd67d5ec194 in emit_signal_instance_in_idle_cb () from /tmp/apport_sandbox_PBPbvQ/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#14 0x00007fd67cdefaaa in g_main_context_dispatch () from /tmp/apport_sandbox_PBPbvQ/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fd67cdefe60 in g_main_context_iterate.isra () from /tmp/apport_sandbox_PBPbvQ/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fd67cdf0182 in g_main_loop_run () from /tmp/apport_sandbox_PBPbvQ/lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00005630f991ef37 in main (argc=<optimized out>, argv=<optimized out>) at gpm-main.c:273
  268: 		timer_id = g_timeout_add_seconds (20, (GSourceFunc) timed_exit_cb, loop);
  269: 		g_source_set_name_by_id (timer_id, "[GpmMain] timed-exit");
  270: 	}
  271: 
  272: 	if (immediate_exit == FALSE) {
  273: 		g_main_loop_run (loop);
  274: 	}
  275: 
  276: 	g_main_loop_unref (loop);
  277: 
  278: 	g_object_unref (session);