台式机 20.04.1 desktop 64位。新安装USB接口摄像头，系统不认（在win可正常工作），百度搜索无法解决，求援！
gu@gu-System-Product-Name:~$ lsusb
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 002: ID 18f8:0f99 [Maxxter] Optical gaming mouse
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
gu@gu-System-Product-Name:~$ cheese
(cheese:19843): Clutter-WARNING **: 10:26:14.591: Whoever translated default:LTR did so wrongly.
** Message: 10:26:14.756: cheese-application.vala:214: Error during camera setup: 未发现设备
(cheese:19843): cheese-CRITICAL **: 10:26:14.766: cheese_camera_device_get_name: assertion 'CHEESE_IS_CAMERA_DEVICE (device)' failed
(cheese:19843): GLib-CRITICAL **: 10:26:14.766: g_variant_new_string: assertion 'string != NULL' failed
(cheese:19843): GLib-CRITICAL **: 10:26:14.766: g_variant_ref_sink: assertion 'value != NULL' failed
(cheese:19843): GLib-GIO-CRITICAL **: 10:26:14.766: g_settings_schema_key_type_check: assertion 'value != NULL' failed
(cheese:19843): GLib-CRITICAL **: 10:26:14.766: g_variant_get_type_string: assertion 'value != NULL' failed
(cheese:19843): GLib-GIO-CRITICAL **: 10:26:14.766: g_settings_set_value: key 'camera' in 'org.gnome.Cheese' expects type 's', but a GVariant of type '(null)' was given
(cheese:19843): GLib-CRITICAL **: 10:26:14.766: g_variant_unref: assertion 'value != NULL' failed
** (cheese:19843): CRITICAL **: 10:26:14.766: cheese_preferences_dialog_setup_resolutions_for_device: assertion 'device != NULL' failed
