已经更新到最新，桌面环境 MATE，从菜单启动会在任务栏有一闪而过的“正在启动 茄子”和“拍照”，之后未出现任何窗口。从终端运行则直接崩溃，回显如下：
$ cheese
Gtk-Message: 13:37:20.593: Failed to load module "colorreload-gtk-module"
Gtk-Message: 13:37:20.593: Failed to load module "window-decorations-gtk-module"
(cheese:14724): dbind-WARNING **: 13:37:20.600: Couldn't connect to accessibility bus: Failed to connect to socket /var/lib/lxdm/.cache/at-spi/bus_0: 权限不够
[3:48:34.287505142] [14724] INFO Camera camera_manager.cpp:313 libcamera v0.3.0
段错误（核心已转储）
lsusb：
Bus 001 Device 005: ID 0bda:565a Realtek Semiconductor Corp. Integrated_Webcam_HD
使用 GDB 调试，有如下显示：
$ gdb cheese
GNU gdb (GDB) 15.1
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Reading symbols from cheese...
Reading symbols from /usr/lib/debug/.build-id/8e/7570557ea94da2c2ebdc02d0a6805d6bff83bf.debug...
(gdb) run
Starting program: /usr/bin/cheese
This GDB supports auto-downloading debuginfo from the following URLs:
<https://debuginfod.aosc.io>
<https://debuginfod.elfutils.org>
Enable debuginfod for this session? (y or [n]) n
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7fffe73ff6c0 (LWP 15295)]
[New Thread 0x7fffdffff6c0 (LWP 15296)]
[New Thread 0x7fffe6bfe6c0 (LWP 15297)]
[New Thread 0x7fffe63b06c0 (LWP 15298)]
Gtk-Message: 13:43:07.084: Failed to load module "colorreload-gtk-module"
Gtk-Message: 13:43:07.084: Failed to load module "window-decorations-gtk-module"
[New Thread 0x7fffe5ae86c0 (LWP 15299)]
(cheese:15291): dbind-WARNING **: 13:43:07.089: Couldn't connect to accessibility bus: Failed to connect to socket /var/lib/lxdm/.cache/at-spi/bus_0: 权限不够
[New Thread 0x7fffe4c076c0 (LWP 15300)]
[New Thread 0x7fffdd1ff6c0 (LWP 15301)]
[New Thread 0x7fffdc9fe6c0 (LWP 15302)]
[New Thread 0x7fffc0dff6c0 (LWP 15303)]
[Thread 0x7fffc0dff6c0 (LWP 15303) exited]
[Thread 0x7fffdc9fe6c0 (LWP 15302) exited]
[New Thread 0x7fffdc9fe6c0 (LWP 15304)]
[New Thread 0x7fffc0dff6c0 (LWP 15305)]
[New Thread 0x7fffb39ff6c0 (LWP 15306)]
[New Thread 0x7fffa97ff6c0 (LWP 15307)]
[New Thread 0x7fffa8ffe6c0 (LWP 15308)]
[Thread 0x7fffa97ff6c0 (LWP 15307) exited]
[New Thread 0x7fffa97ff6c0 (LWP 15309)]
[New Thread 0x7fffa23ff6c0 (LWP 15310)]
[3:54:20.747062859] [15291] INFO Camera camera_manager.cpp:313 libcamera v0.3.0
[New Thread 0x7fffa1bfe6c0 (LWP 15311)]
[Thread 0x7fffa1bfe6c0 (LWP 15311) exited]
[New Thread 0x7fffa1bfe6c0 (LWP 15312)]
Thread 1 "cheese" received signal SIGSEGV, Segmentation fault.
gst_structure_get_field (fieldname=0x7ffff7f7b323 "api.v4l2.path", structure=0x0) at ../subprojects/gstreamer/gst/gststructure.c:1108
warning: 1108 ../subprojects/gstreamer/gst/gststructure.c: 没有那个文件或目录
(gdb) backtrace
#0 gst_structure_get_field (fieldname=0x7ffff7f7b323 "api.v4l2.path", structure=0x0) at ../subprojects/gstreamer/gst/gststructure.c:1108
#1 gst_structure_get_value (structure=0x0, fieldname=fieldname@entry=0x7ffff7f7b323 "api.v4l2.path") at ../subprojects/gstreamer/gst/gststructure.c:1131
#2 0x00007ffff7f76711 in cheese_camera_device_set_property (object=0x5555565f6660 [CheeseCameraDevice], prop_id=3, value=0x7fffffffd6b0, pspec=0x555556041850 [GParamObject]) at ../libcheese/cheese-camera-device.c:635
#3 0x00007ffff7384ef8 in object_set_property (object=object@entry=0x5555565f6660 [CheeseCameraDevice], pspec=0x555556041850 [GParamObject], value=0x7fffffffd6b0, nqueue=nqueue@entry=0x0, user_specified=<optimized out>)
at ../gobject/gobject.c:2169
#4 0x00007ffff73866b0 in g_object_new_internal (class=0x5555565f6c70, params=0x7fffffffd5b0, n_params=1) at ../gobject/gobject.c:2648
#5 0x00007ffff7388f03 in g_object_new_internal (n_params=1, params=0x7fffffffd5b0, class=0x5555565f6c70) at ../gobject/gobject.c:2920
#6 g_object_new_valist (object_type=object_type@entry=0x5555564594c0 [CheeseCameraDevice], first_property_name=first_property_name@entry=0x7ffff7f7b05f "device", var_args=var_args@entry=0x7fffffffd8b0) at ../gobject/gobject.c:2942
#7 0x00007ffff744ed9e in g_initable_new_valist
(object_type=0x5555564594c0 [CheeseCameraDevice], first_property_name=0x7ffff7f7b05f "device", var_args=var_args@entry=0x7fffffffd8b0, cancellable=cancellable@entry=0x0, error=error@entry=0x7fffffffd9b0) at ../gio/ginitable.c:245
#8 0x00007ffff744ee89 in g_initable_new (object_type=<optimized out>, cancellable=cancellable@entry=0x0, error=error@entry=0x7fffffffd9b0, first_property_name=first_property_name@entry=0x7ffff7f7b05f "device") at ../gio/ginitable.c:163
#9 0x00007ffff7f7747e in cheese_camera_device_new (device=device@entry=0x5555565f66d0 [GstLibcameraDevice], error=error@entry=0x7fffffffd9b0) at ../libcheese/cheese-camera-device.c:781
#10 0x00007ffff7f774d2 in cheese_camera_device_monitor_set_up_device (device=0x5555565f66d0 [GstLibcameraDevice]) at ../libcheese/cheese-camera-device-monitor.c:96
#11 cheese_camera_device_monitor_added (monitor=0x555556023950 [CheeseCameraDeviceMonitor], device=device@entry=0x5555565f66d0 [GstLibcameraDevice]) at ../libcheese/cheese-camera-device-monitor.c:117
#12 0x00007ffff7f7767f in cheese_camera_device_monitor_add_devices (data=0x5555565f66d0, user_data=<optimized out>) at ../libcheese/cheese-camera-device-monitor.c:189
#13 0x00007ffff7276fa8 in g_list_foreach (list=<optimized out>, list@entry=0x5555565d0930 = {...}, func=func@entry=0x7ffff7f77670 <cheese_camera_device_monitor_add_devices>, user_data=user_data@entry=0x555556023950)
at ../glib/glist.c:1008
#14 0x00007ffff7f788d8 in cheese_camera_device_monitor_coldplug (monitor=0x555556023950 [CheeseCameraDeviceMonitor]) at ../libcheese/cheese-camera-device-monitor.c:221
#15 0x00007ffff7f78b3b in cheese_camera_detect_camera_devices (camera=0x5555561aeec0 [CheeseCamera]) at ../libcheese/cheese-camera.c:350
#16 cheese_camera_setup (camera=camera@entry=0x5555561aeec0 [CheeseCamera], device=device@entry=0x0, error=error@entry=0x7fffffffdb20) at ../libcheese/cheese-camera.c:1577
#17 0x000055555556a2d8 in cheese_application_setup_camera (self=0x5555555aa830 [CheeseApplication]) at ../src/cheese-application.vala:217
#18 cheese_application_common_init (self=<optimized out>) at ../src/cheese-application.vala:131
#22 0x00007ffff739bb3f in <emit signal 'activate' on instance 0x5555555aa830 [CheeseApplication]> (instance=instance@entry=0x5555555aa830, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3583
#19 0x00007ffff7380ab1 in _g_closure_invoke_va (closure=0x5555555a7fa0, return_value=0x0, instance=0x5555555aa830, args=0x7fffffffddf0, n_params=0, param_types=0x0) at ../gobject/gclosure.c:897
#20 0x00007ffff7395ef8 in signal_emit_valist_unlocked (instance=instance@entry=0x5555555aa830, signal_id=signal_id@entry=8, detail=detail@entry=0, var_args=var_args@entry=0x7fffffffddf0) at ../gobject/gsignal.c:3424
#21 0x00007ffff739ba92 in g_signal_emit_valist (instance=0x5555555aa830, signal_id=8, detail=0, var_args=0x7fffffffddf0) at ../gobject/gsignal.c:3263
#23 0x00007ffff74b2e3b in g_application_activate (application=0x5555555aa830 [CheeseApplication]) at ../gio/gapplication.c:2451
#24 0x0000555555560efc in cheese_application_real_command_line (base=0x5555555aa830 [CheeseApplication], cl=cl@entry=0x555555bf0420 [GApplicationCommandLine]) at ../src/cheese-application.vala:173
#29 0x00007ffff739bb3f in <emit signal 'command-line' on instance 0x5555555aa830 [CheeseApplication]> (instance=instance@entry=0x5555555aa830, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3583
#25 0x00007ffff74560b3 in _g_cclosure_marshal_INT__OBJECTv
(closure=0x5555555a8420, return_value=0x7fffffffe0e0, instance=<optimized out>, args=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=0x5555555a82d0) at ../gio/gmarshal-internal.c:847
#26 0x00007ffff7380ab1 in _g_closure_invoke_va (closure=0x5555555a8420, return_value=0x7fffffffe0e0, instance=0x5555555aa830, args=0x7fffffffe1e0, n_params=1, param_types=0x5555555a82d0) at ../gobject/gclosure.c:897
#27 0x00007ffff739520e in signal_emit_valist_unlocked (instance=instance@entry=0x5555555aa830, signal_id=signal_id@entry=10, detail=detail@entry=0, var_args=var_args@entry=0x7fffffffe1e0) at ../gobject/gsignal.c:3424
#28 0x00007ffff739ba92 in g_signal_emit_valist (instance=0x5555555aa830, signal_id=10, detail=0, var_args=0x7fffffffe1e0) at ../gobject/gsignal.c:3263
#30 0x00007ffff74b0d55 in g_application_call_command_line (exit_status=0x7fffffffe374, options=<optimized out>, arguments=<optimized out>, application=0x5555555aa830 [CheeseApplication]) at ../gio/gapplication.c:1103
#31 g_application_call_command_line (application=0x5555555aa830 [CheeseApplication], arguments=<optimized out>, options=<optimized out>, exit_status=0x7fffffffe374) at ../gio/gapplication.c:1080
#32 0x00007ffff74b324a in g_application_real_local_command_line (application=0x5555555aa830 [CheeseApplication], arguments=0x7fffffffe378, exit_status=0x7fffffffe374) at ../gio/gapplication.c:1179
#33 0x00007ffff74b33c6 in g_application_run (application=application@entry=0x5555555aa830 [CheeseApplication], argc=argc@entry=1, argv=argv@entry=0x7fffffffe4f8) at ../gio/gapplication.c:2681
#34 0x000055555555fa85 in _vala_main (args_length1=1, args=0x7fffffffe4f8) at ../src/cheese-main.vala:27
#35 main (argc=1, argv=0x7fffffffe4f8) at ../src/cheese-main.vala:21
Thread 1 "cheese" received signal SIGSEGV, Segmentation fault.
gst_structure_get_field (fieldname=0x7ffff7f7b323 "api.v4l2.path", structure=0x0) at ../subprojects/gstreamer/gst/gststructure.c:1108
warning: 1108 ../subprojects/gstreamer/gst/gststructure.c: 没有那个文件或目录
使用 GStreamer 相关工具尝试读取，未显示 api.v4l2.path 属性，经查询网络资料，一般都是会有的：My laptop's web cam doesn't show in in the device list if I launch cheese while an external webcam is connected (#92) · Issues · GNOME / cheese · GitLab
$ gst-device-monitor-1.0 Video/Source
Probing devices...
[3:56:15.860490610] [15397] INFO Camera camera_manager.cpp:313 libcamera v0.3.0
Device found:
name : \_SB_.PCI0.XHC_.RHUB.HS06-6:1.0-0bda:565a
class : Source/Video
caps : image/jpeg, width=640, height=360
image/jpeg, width=640, height=480
image/jpeg, width=848, height=480
image/jpeg, width=960, height=540
image/jpeg, width=1280, height=720
image/jpeg, width=1280, height=720
video/x-raw, format=YUY2, width=160, height=120
video/x-raw, format=YUY2, width=320, height=180
video/x-raw, format=YUY2, width=320, height=240
video/x-raw, format=YUY2, width=424, height=240
video/x-raw, format=YUY2, width=640, height=360
video/x-raw, format=YUY2, width=640, height=480
video/x-raw, format=YUY2, width=640, height=480
gst-launch-1.0 libcamerasrc camera-name="\\_SB_.PCI0.XHC_.RHUB.HS06-6:1.0-0bda:565a" ! ...
GStreamer 本身可以正常打开摄像头，以下两种方式都可以：
$ gst-launch-1.0 v4l2src ! jpegdec ! xvimagesink
$ gst-launch-1.0 libcamerasrc camera-name="\\\\_SB_.PCI0.XHC_.RHUB.HS06-6:1.0-0bda:565a" ! jpegdec ! xvimagesink
VLC 和 guvcview 也都能正常使用摄像头。