我使用的是 Ubuntu 18.04。我的网络摄像头无法在 Cheese 和 Zoom 客户端等应用程序上使用。但当我通过 Firefox 使用 Google Meet 时，它可以在浏览器中使用。
在我用 pipewire 替换 pulseaudio 之前我的网络摄像头工作正常askubuntu 上的这个答案。
我已在下面概述了该答案的步骤。
sudo add-apt-repository ppa:pipewire-debian/pipewire-upstream
sudo apt update
sudo apt install pipewire
sudo apt install libspa-0.2-bluetooth
sudo apt install pipewire-audio-client-libraries
systemctl --user daemon-reload
systemctl --user --now disable pulseaudio.service pulseaudio.socket
systemctl --user mask pulseaudio
systemctl --user --now enable pipewire-media-session.service
systemctl --user restart pipewire
完成此操作后，我的网络摄像头就不再为 Cheese 和 Zoom 客户端工作了。
令人惊讶的是，Signal 桌面应用能够正常使用我的网络摄像头。我不太清楚这里的问题是什么。
$ ls -l /dev/video0
crw-rw----+ 1 root video 81, 0 Mar 22 20:55 /dev/video0
$ ls -l /dev/media0
crw-rw---- 1 root video 239, 0 Mar 22 20:55 /dev/media0
$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 048d:c100 Integrated Technology Express, Inc.
Bus 001 Device 003: ID 5986:2113 Acer, Inc
Bus 001 Device 005: ID 8087:0aaa Intel Corp.
Bus 001 Device 002: ID 046d:c534 Logitech, Inc. Unifying Receiver
Bus 001 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
$ v4l2-ctl --list-devices
Integrated Camera: Integrated C (usb-0000:00:14.0-6):
/dev/video0
/dev/video1
$ ls -ltrh /dev/video*
crw-rw----+ 1 root video 81, 1 Mar 22 20:55 /dev/video1
crw-rw----+ 1 root video 81, 0 Mar 22 20:55 /dev/video0
$ getfacl /dev/video*
getfacl: Removing leading '/' from absolute path names
# file: dev/video0
# owner: root
# group: video
user::rw-
user:akshaj:rw-
group::rw-
mask::rw-
other::---
# file: dev/video1
# owner: root
# group: video
user::rw-
user:akshaj:rw-
group::rw-
mask::rw-
other::---
$ id
uid=1000(akshaj) gid=1000(akshaj) groups=1000(akshaj),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),116(lpadmin),126(sambashare),999(docker)
$ cheese
(cheese:13763): Gtk-WARNING **: 22:24:07.642: Theme parsing error: cheese.css:7:35: The style property GtkScrollbar:min-slider-length is deprecated and shouldn't be used anymore. It will be removed in a future version
[1:28:54.752437056] [13763] INFO Camera camera_manager.cpp:293 libcamera v0.0.0
[1:28:54.754354637] [13774] ERROR MediaDevice media_device.cpp:479 /dev/media0[]: Failed to open media device at /dev/media0: Permission denied
[1:28:54.754414311] [13774] INFO DeviceEnumerator device_enumerator.cpp:218 Unable to populate media device /dev/media0 (Permission denied), skipping
[1:28:54.754438305] [13774] WARN DeviceEnumerator device_enumerator_udev.cpp:173 Failed to add device for '/sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/media0', skipping
** Message: 22:24:07.860: cheese-application.vala:211: Error during camera setup: No device found
(cheese:13763): cheese-CRITICAL **: 22:24:07.889: cheese_camera_device_get_name: assertion 'CHEESE_IS_CAMERA_DEVICE (device)' failed
(cheese:13763): GLib-CRITICAL **: 22:24:07.889: g_variant_new_string: assertion 'string != NULL' failed
(cheese:13763): GLib-CRITICAL **: 22:24:07.889: g_variant_ref_sink: assertion 'value != NULL' failed
(cheese:13763): GLib-GIO-CRITICAL **: 22:24:07.889: g_settings_schema_key_type_check: assertion 'value != NULL' failed
(cheese:13763): GLib-CRITICAL **: 22:24:07.889: g_variant_get_type_string: assertion 'value != NULL' failed
(cheese:13763): GLib-GIO-CRITICAL **: 22:24:07.889: g_settings_set_value: key 'camera' in 'org.gnome.Cheese' expects type 's', but a GVariant of type '(null)' was given
(cheese:13763): GLib-CRITICAL **: 22:24:07.889: g_variant_unref: assertion 'value != NULL' failed
** (cheese:13763): CRITICAL **: 22:24:07.889: cheese_preferences_dialog_setup_resolutions_for_device: assertion 'device != NULL' failed
答案1
我在安装 Zoom 时也遇到了同样的问题Ubuntu 软件中心。我刚刚用从以下网址下载的 5.11.3 (3882) 版本的 Zoom 替换了它https://us04web.zoom.us/support/down4j并且网络摄像头开始工作。