Hi Sandie, Replying to the list because they have more experience than me with webcams, modern Ubuntu, ‘snaps’, and laptop hibernation.
> After writing to the group. I uninstalled Cameracrls & reinstalled > it. It seemed to find the camera when I ask but don't know if it > function on Telegram or Zoom. > > I put lsb etc in & got this back: > > No LSB modules are available. > Distributor ID: Ubuntu > Description: Ubuntu 22.04.1 LTS > Release: 22.04 > Codename: jammy > > Now installing v4l-utls as it wasn't installed & I was prompted to do > so. > > Put in [v4l2-ctl --list-devices] & got this back: > > USB2.0 UVC PC Camera: USB2.0 UV (usb-0000:00:15.0-8): > /dev/video0 > /dev/video1 > /dev/media0 > > I think one of those devices is a usb controller for a handheld keypad > I sometimes use. No, I think they're all to do with the single video camera. It's good that v4l2-ctl lists it. Running ‘v4l2-ctl -d /dev/video0 --all’ will show lots of information, for your interest, including ‘Format Video Capture’ giving the resolution. > now putting in lsusb command. > > Got this: > > Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub > Bus 001 Device 006: ID 05e3:0503 Genesys Logic, Inc. Webcam > Bus 001 Device 005: ID 0bda:b720 Realtek Semiconductor Corp. RTL8723BU > 802.11b/g/n WLAN Adapter > Bus 001 Device 004: ID 05e3:0751 Genesys Logic, Inc. microSD Card Reader > Bus 001 Device 003: ID 4037:2804 2.4G Composite Devic > Bus 001 Device 002: ID 0bda:8152 Realtek Semiconductor Corp. RTL8152 Fast > Ethernet Adapter > Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > > I wonder what all that tells you? It lets us spot the ‘Genesys Logic, Inc. Webcam’ which gives us the manufacturer's USB ID for your particular model, ‘05e3:0503’, which is something to throw into Google when looking for other people having problems. What is it that goes wrong? On Zoom calls, for instance. You could try running ‘dstat’ in a terminal before starting the call. You'll probably have to install the package. It ticks away printing a line showing how the machine is spending its time every second. Of particular interest is the amount of idle CPU time, ‘idl’. If that gets too low for too long during the call then it could be Zoom, or whatever, is trying to do too much compared to the machine's power and the resolution of the video. So if cameractrls lets you lower the camera's resolution then that's something to try. Halving the width and height quarters the amount of pixels to process. > I've been out to the mercado & turned off all things except for > thunderbird & computer woke up from hibernate?? Mayb that is the/a > clue. Although a few days ago as I said it would awake with all tabs > applications etc open. > > Thank you again Ralph. If you think I should install another camera > operator I will uninstall Cameractls. I hope to try it over the > weekend with a few calls. All the programs which want to use the camera's picture or change the camera settings use the V4L2 layer of software, Video for Linux version 2, so it doesn't matter whether you have Cheese installed, Cameractls, or whatever. They're all different ways of accessing the camera through V4L2. > When you have time let me know what your diagnosis is. It's so > interesting to put in the commands & see the computer response. > > Somewhere while trying to do my own research it was suggested not to > use software updater with the big A but to just use Ubuntu Software > one? Not sure what you think about that. -- Cheers, Ralph. -- Next meeting: Online, Jitsi, Tuesday, 2023-03-07 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
