xfce4-power-manager-settings crashes (segfault) when I unplug my USB keyboard-mouse combo
Submitted by mjw..@..il.com
Description
I am using a basic wireless Logitech mouse and keyboard that share a "Logitech Unifying Receiver", which is a little USB dongle that connects both input devices to the PC.
For unimportant reasons, I want to leave the power manager settings window open while my mouse and keyboard are temporarily connected to another computer. But when I unplug the USB receiver, the power manager settings program commits a segmentation fault and closes. This happens pretty reliably. Once I managed to unplug without crashing the settings window, but I don't know what was different that time.
Unplugging a wired USB keyboard doesn't seem to cause any problems for the power settings program.
Xfce4 version information: "This is xfce4-power-manager version 1.6.5, running on Xfce 4.14. Built with GTK+ 3.24.10, linked with GTK+ 3.24.12."
I am on the latest Arch Linux.
I guess the crash happens here:
Stack trace of thread 2125186:
#0 0x00007f3e9ab99b89 g_type_check_instance (libgobject-2.0.so.0)
#1 0x00007f3e9abac92a g_signal_handler_disconnect (libgobject-2.0.so.0)
#2 0x00005602acea6af3 n/a (xfce4-power-manager-settings)
#3 0x00007f3e9abb7d5a g_closure_invoke (libgobject-2.0.so.0)
#4 0x00007f3e9aba588e n/a (libgobject-2.0.so.0)
#5 0x00007f3e9aba998a g_signal_emit_valist (libgobject-2.0.so.0)
#6 0x00007f3e9abaa7f0 g_signal_emit (libgobject-2.0.so.0)
#7 0x00007f3e998e96d0 ffi_call_unix64 (libffi.so.6)
#8 0x00007f3e998e90a0 ffi_call (libffi.so.6)
#9 0x00007f3e9abc15ae g_cclosure_marshal_generic (libgobject-2.0.so.0)
#10 0x00007f3e9abb7d5a g_closure_invoke (libgobject-2.0.so.0)
#11 0x00007f3e9aba588e n/a (libgobject-2.0.so.0)
#12 0x00007f3e9abac32b g_signal_emitv (libgobject-2.0.so.0)
#13 0x00007f3e9abf368f n/a (libupower-glib.so.3)
#14 0x00007f3e9abb7d5a g_closure_invoke (libgobject-2.0.so.0)
#15 0x00007f3e9aba4ff8 n/a (libgobject-2.0.so.0)
#16 0x00007f3e9aba998a g_signal_emit_valist (libgobject-2.0.so.0)
#17 0x00007f3e9abaa7f0 g_signal_emit (libgobject-2.0.so.0)
#18 0x00007f3e9ac74750 n/a (libgio-2.0.so.0)
#19 0x00007f3e9ac7a1d9 n/a (libgio-2.0.so.0)
#20 0x00007f3e9aacb2bf g_main_context_dispatch (libglib-2.0.so.0)
#21 0x00007f3e9aacd201 n/a (libglib-2.0.so.0)
#22 0x00007f3e9aacd241 g_main_context_iteration (libglib-2.0.so.0)
#23 0x00007f3e9acaaa3e g_application_run (libgio-2.0.so.0)
#24 0x00007f3e9a8c1153 __libc_start_main (libc.so.6)
#25 0x00005602acea409e _start (xfce4-power-manager-settings)
Stack trace of thread 2125187:
#0 0x00007f3e9a98e9ef __poll (libc.so.6)
#1 0x00007f3e9aacd170 n/a (libglib-2.0.so.0)
#2 0x00007f3e9aacd241 g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007f3e9aacd292 n/a (libglib-2.0.so.0)
#4 0x00007f3e9aaa9c11 n/a (libglib-2.0.so.0)
#5 0x00007f3e99c204cf start_thread (libpthread.so.0)
#6 0x00007f3e9a9992d3 __clone (libc.so.6)
Stack trace of thread 2125188:
#0 0x00007f3e9a98e9ef __poll (libc.so.6)
#1 0x00007f3e9aacd170 n/a (libglib-2.0.so.0)
#2 0x00007f3e9aace113 g_main_loop_run (libglib-2.0.so.0)
#3 0x00007f3e9ac67ba8 n/a (libgio-2.0.so.0)
#4 0x00007f3e9aaa9c11 n/a (libglib-2.0.so.0)
#5 0x00007f3e99c204cf start_thread (libpthread.so.0)
#6 0x00007f3e9a9992d3 __clone (libc.so.6)The one time when I unplugged with no crash, I did see these warnings on the console; they appear to be related to this matter:
(xfce4-power-manager-settings:2123646): GLib-GObject-WARNING **: 21:40:12.070: instance with invalid (NULL) class pointer
(xfce4-power-manager-settings:2123646): GLib-GObject-CRITICAL **: 21:40:12.071: g_signal_handler_disconnect: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failed
(xfce4-power-manager-settings:2123646): GLib-GObject-WARNING **: 21:40:12.102: instance with invalid (NULL) class pointer
(xfce4-power-manager-settings:2123646): GLib-GObject-CRITICAL **: 21:40:12.102: g_signal_handler_disconnect: assertion 'G_TYPE_CHECK_INSTANCE (instance)' failedVersion: 1.6.5