Hi, since COVID-19 forced everyone to dig up old webcams, I thought I'd share my "universal" workaround (sorry it's a clunky one): Step 1 (one time): sudo apt install v4l2loopback-utils Step 2 (redo after reboot): sudo modprobe v4l2loopback devices=1 exclusive_caps=1 Step 3 (before starting a video call): ffmpeg -vsync 2 -f v4l2 -i /dev/video0 -pix_fmt yuv420p -f v4l2 /dev/video1
Notes: * In the above Step 3, /dev/video0 is the "problematic" webcam and /dev/video1 the newly created loopback device. You can check which is which with 'v4l2-ctl --list-devices' (after installing v4l2-ctl with 'sudo apt install v4l-utils') * I recommend letting ffmpeg run in an open terminal during the video call, and stopping it with CTRL-C when finished (so that the webcam can power down and the CPU is not unnecessarily loaded) * What all this does: simply spoken, the problem is that some old webcams expose nonstandard parameters/controls to the software, and not all programs can deal with that. This solution makes a "virtual webcam" with bog-standard properties. The ffmpeg command streams the output from the real webcam to the virtual webcam. * For higher resolution webcams, it may be necessary to add a -s 640x480 or -s 1280x720 or something along those lines to the ffmpeg command. Carefully, because the order of the flags matters. * To use the virtual device in cheese (and possibly other older programs), I believe you still need v4l1compat.so (which solves a different, independent problem). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1765058 Title: Regression: 046d:08da Logitech, Inc. QuickCam Messanger not detected in Bionic Status in linux package in Ubuntu: Invalid Bug description: The 046d:08da Logitech, Inc. QuickCam Messanger webcam that was being detected fine in Ubuntu 17.10 is not being detected in bionic by applications. It is detected fine by the system, but Cheese for instance reports "No device detected", and I've tried with other applications and none of them is capable of detecting the webcam. This is what is shown when the webcam is plugged in: [ 1266.823479] usb 3-13: new full-speed USB device number 11 using xhci_hcd [ 1266.972299] usb 3-13: New USB device found, idVendor=046d, idProduct=08da [ 1266.972303] usb 3-13: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 1266.972681] gspca_main: gspca_zc3xx-2.14.0 probing 046d:08da [ 1268.055730] input: gspca_zc3xx as /devices/pci0000:00/0000:00:14.0/usb3/3-13/input/input15 lsusb shows: Bus 003 Device 011: ID 046d:08da Logitech, Inc. QuickCam Messanger ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-15-generic 4.15.0-15.16 ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15 Uname: Linux 4.15.0-15-generic x86_64 ApportVersion: 2.20.9-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: wgarcia 4318 F.... pulseaudio /dev/snd/controlC0: wgarcia 4318 F.... pulseaudio /dev/snd/controlC1: wgarcia 4318 F.... pulseaudio CurrentDesktop: Unity:Unity7:ubuntu Date: Wed Apr 18 15:55:10 2018 HibernationDevice: RESUME=UUID=8841b8fe-8f2d-4897-8a67-f9404df2ed83 InstallationDate: Installed on 2015-10-17 (913 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: Dell Inc. Precision Tower 7810 ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-15-generic root=UUID=63c3c29d-24d9-4ecb-8511-3f2291792bc5 ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-15-generic N/A linux-backports-modules-4.15.0-15-generic N/A linux-firmware 1.173 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to bionic on 2018-03-14 (35 days ago) dmi.bios.date: 04/14/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A07 dmi.board.name: 0GWHMW dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 7 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA07:bd04/14/2015:svnDellInc.:pnPrecisionTower7810:pvr01:rvnDellInc.:rn0GWHMW:rvrA00:cvnDellInc.:ct7:cvr: dmi.product.name: Precision Tower 7810 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1765058/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
