This also affects older kernel from ubuntu 22.04. See https://bugs.launchpad.net/ubuntu/+source/linux-meta- hwe-6.8/+bug/2098034
-- You received this bug notification because you are a member of Debcrafters packages, which is subscribed to libcamera in Ubuntu. https://bugs.launchpad.net/bugs/2110496 Title: no stream from UVC webcam Status in libcamera package in Ubuntu: New Bug description: jlquinn@cerberus:~/sw/src/libcamera$ lsb_release -rd No LSB modules are available. Description: Ubuntu 24.04.2 LTS Release: 24.04 jlquinn@cerberus:~/sw/src/libcamera$ apt-cache policy pkgname libcamera0.2 libcamera0.2: Installed: 0.2.0-3fakesync1build6 Candidate: 0.2.0-3fakesync1build6 Version table: *** 0.2.0-3fakesync1build6 500 500 http://us.archive.ubuntu.com/ubuntu noble/main amd64 Packages 100 /var/lib/dpkg/status N: Unable to locate package pkgname I'm trying to get a webcam working and having no success. I don't know if libcamera is the right component to put this against, but I'm starting here. When I plug in the camera, the logs show: ``` May 12 14:31:09 cerberus kernel: usb 3-11.3: new high-speed USB device number 32 using xhci_hcd May 12 14:31:10 cerberus kernel: usb 3-11.3: New USB device found, idVendor=26e0, idProduct=6230, bcdDevice= 1.00 May 12 14:31:10 cerberus kernel: usb 3-11.3: New USB device strings: Mfr=2, Product=1, SerialNumber=3 May 12 14:31:10 cerberus kernel: usb 3-11.3: Product: L01 HD Webcam May 12 14:31:10 cerberus kernel: usb 3-11.3: Manufacturer: Sonix Technology Co., Ltd. May 12 14:31:10 cerberus kernel: usb 3-11.3: SerialNumber: SN0001 May 12 14:31:10 cerberus kernel: usb 3-11.3: Found UVC 1.00 device L01 HD Webcam (26e0:6230) May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_INFO) UVC control 5 on unit 1: 0 (exp. 1). May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_INFO) UVC control 7 on unit 1: 0 (exp. 1). May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_INFO) UVC control 9 on unit 1: 0 (exp. 1). May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_INFO) UVC control 10 on unit 1: 0 (exp. 1). May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_INFO) UVC control 12 on unit 1: 0 (exp. 1). May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_INFO) UVC control 14 on unit 1: 0 (exp. 1). May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_INFO) UVC control 16 on unit 1: 0 (exp. 1). May 12 14:31:10 cerberus kernel: usb 3-11.3: 3:1: cannot get freq at ep 0x84 May 12 14:31:10 cerberus mtp-probe[83099]: checking bus 3, device 32: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-11/3-11.3" May 12 14:31:10 cerberus mtp-probe[83099]: bus: 3, device: 32 was not an MTP device May 12 14:31:10 cerberus pipewire[15704]: spa.v4l2: '/dev/video0' VIDIOC_QUERYCTRL: Broken pipe May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_DEF) UVC control 12 on unit 1: 0 (exp. 3). May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_DEF) UVC control 12 on unit 1: 0 (exp. 3). May 12 14:31:10 cerberus pipewire[15704]: spa.v4l2: '/dev/video0' VIDIOC_QUERYCTRL: Broken pipe May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_DEF) UVC control 12 on unit 1: 0 (exp. 3). May 12 14:31:10 cerberus mtp-probe[83143]: checking bus 3, device 32: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-11/3-11.3" May 12 14:31:10 cerberus wireplumber[30571]: <WpPortalPermissionStorePlugin:0x6347b33119e0> Failed to call Lookup: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for camera May 12 14:31:10 cerberus mtp-probe[83143]: bus: 3, device: 32 was not an MTP device May 12 14:31:10 cerberus pipewire[15704]: [14:06:10.169681267] [15704] INFO Camera camera_manager.cpp:284 libcamera v0.2.0 May 12 14:31:10 cerberus kernel: usb 3-11.3: Failed to query (GET_DEF) UVC control 12 on unit 1: 0 (exp. 3). May 12 14:31:10 cerberus kernel: usb 3-11.3: 3:1: cannot get freq at ep 0x84 May 12 14:31:10 cerberus kernel: usb 3-11.3: 3:1: cannot get freq at ep 0x84 May 12 14:31:10 cerberus wireplumber[30571]: <WpPortalPermissionStorePlugin:0x6347b33119e0> Failed to call Lookup: GDBus.Error:org.freedesktop.portal.Error.NotFound: No entry for camera ``` So the kernel can see the device. libcamera includes a simple program called cam to quickly use the camera. Here's what happens when I try: ``` jlquinn@cerberus:~/sw/src/libcamera$ cam -c 1 --list-controls [13:47:47.508290998] [80875] INFO Camera camera_manager.cpp:284 libcamera v0.2.0 Using camera \_SB_.PCI0.XHCI.RHUB.HS11-11.3:1.0-26e0:6230 as cam0 Control: AeEnable: [false..true] Control: AnalogueGain: [1.000000..4.000000] Control: ExposureTime: [100..500000] Control: Saturation: [0.000000..2.415094] Control: Contrast: [0.500000..1.500000] Control: Brightness: [-1.000000..1.000000] jlquinn@cerberus:~/sw/src/libcamera$ cam -c 1 --list-properties [13:47:55.955207175] [80879] INFO Camera camera_manager.cpp:284 libcamera v0.2.0 Using camera \_SB_.PCI0.XHCI.RHUB.HS11-11.3:1.0-26e0:6230 as cam0 Property: SystemDevices = [ 20736 ] Property: PixelArrayActiveAreas = [ (0, 0)/1920x1080 ] Property: PixelArraySize = 1920x1080 Property: Location = 2 Property: Model = L01 HD Webcam : L01 HD Webcam jlquinn@cerberus:~/sw/src/libcamera$ cam -c 1 --capture=10 -F [13:48:39.132754161] [80911] INFO Camera camera_manager.cpp:284 libcamera v0.2.0 Using camera \_SB_.PCI0.XHCI.RHUB.HS11-11.3:1.0-26e0:6230 as cam0 [13:48:39.143768605] [80911] INFO Camera camera.cpp:1183 configuring streams: (0) 1920x1080-MJPEG [13:48:39.421476856] [80914] ERROR V4L2 v4l2_videodevice.cpp:1906 /dev/video0[13:cap]: Failed to start streaming: Protocol error Failed to start capture Failed to start camera session ``` ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: libcamera0.2 0.2.0-3fakesync1build6 ProcVersionSignature: Ubuntu 6.11.0-25.25~24.04.1-generic 6.11.11 Uname: Linux 6.11.0-25-generic x86_64 ApportVersion: 2.28.1-0ubuntu3.5 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: ubuntu:GNOME Date: Mon May 12 14:14:44 2025 InstallationDate: Installed on 2020-05-29 (1809 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: libcamera UpgradeStatus: Upgraded to noble on 2025-05-01 (12 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libcamera/+bug/2110496/+subscriptions -- Mailing list: https://launchpad.net/~debcrafters-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~debcrafters-packages More help : https://help.launchpad.net/ListHelp
