Heads up: Logitech Web Cams ("UVC Probe Fail")

[John57]

Was curious regarding "UVC Probe Fail" at startup;
after searching, found that this is related to My Logitech Brio 510 webcam.
(currently connected via PCIe > USB3.1 /USB C expansion card)... Logitech Brio 510 has USB C connector.
Lenovo ThinkStation P-520 did not come with USB C port... unless you want to pay $524 for a PCIe Thunderbolt expansion card (yikes!)
After an on-line chat with Logitech customer support, Logitech does not manufacture "linux compatible" webcams!!
("faran P." apologized for the "inconvenience"... waste of money, notwithstanding)
Looks like my Logitech Brio 510 (UV0064) and all 3 C920s (860-000560) go to my former Windows life junk box.
Thankfully, was not frustrated with scrambling to connect on-line...
...unless someone has engineered a solution...

[swarfendor437]

I don't currently have webcam connected but it was an early version that works with Cheese and with Jitsi no problem. Very basic model that cost £30 back in Windows 7 period.

[Aravisian]

Both GnuLinux and Windows users have issues with it:
https://www.reddit.com/r/logitech/comments/13jrufs/logitech_brio_now_working_windows_10/

From what I can tell, the hardware wants to be cutting edge so requires a fast USB port for connection. If it is a USB webcam and is plugged into a 1.0 or 2.0 USB Port, it will likely throw the error.
Additionally, it can balk if used with 4k monitors.

[Mr_Magoo]

Try:
sudo lsmod | grep uvc

Should have something similar to:

uvcvideo              106496  0
videobuf2_vmalloc      20480  1 uvcvideo
videobuf2_v4l2         32768  1 uvcvideo
videobuf2_common       77824  4 videobuf2_vmalloc,videobuf2_v4l2,uvcvideo,videobuf2_memops
videodev              253952  3 videobuf2_v4l2,uvcvideo,videobuf2_common
mc                     61440  5 videodev,snd_usb_audio,videobuf2_v4l2,uvcvideo,videobuf2_common

If you don't see all of those, try:
sudo modprobe {missing module}

So, let's say 'mc' is missing:
sudo modprobe mc

Then try the camera to see if it's working.

---

There's also this, although I'm not sure it'd help:

sudo apt show v4l-utils
Package: v4l-utils
Version: 1.18.0-2build1
Priority: optional
Section: universe/utils
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
Original-Maintainer: Gregor Jasny <gjasny@googlemail.com>
Bugs: https://bugs.launchpad.net/ubuntu/+filebug
Installed-Size: 2,154 kB
Depends: libv4l-0 (= 1.18.0-2build1), libv4l2rds0 (= 1.18.0-2build1), libc6 (>= 2.17), libgcc-s1 (>= 3.0), libstdc++6 (>= 5.2), libudev1 (>= 183)
Breaks: ivtv-utils (<< 1.4.1-2), media-ctl
Replaces: ivtv-utils (<< 1.4.1-2), media-ctl
Homepage: https://linuxtv.org/downloads/v4l-utils/
Download-Size: 586 kB
APT-Sources: http://us.archive.ubuntu.com/ubuntu focal/universe amd64 Packages
Description: Collection of command line video4linux utilities
 v4l-utils contains the following video4linux command line utilities:
 .
  decode_tm6000: decodes tm6000 proprietary format streams
  rds-ctl: tool to receive and decode Radio Data System (RDS) streams
  v4l2-compliance: tool to test v4l2 API compliance of drivers
  v4l2-ctl, cx18-ctl, ivtv-ctl: tools to control v4l2 controls from the cmdline
  v4l2-dbg: tool to directly get and set registers of v4l2 devices
  v4l2-sysfs-path: sysfs helper tool

Try:
v4l2-ctl --list-devices

[John57]

Thanks, had already yanked it in disgust...
Logitech Brio 510 (USB C only) connected via Ableconn PEX-UB158 PCIe (4x),
installed in PCIe 8x slot (fwiw)
ASMedia ASM3142 + Genesys Logic GL3590
2x USB 3 + USB C (3.2)...plus ICC USB3 header.
Purportedly USB3.2 (gen 2) (via PCIe 4x buss?)
Also on-hand: Logitech C920s (USB 2)
will reinstall and run tests that you advised, tomorrow.
Thank you

[John57]

FWIW, after re-installing Zorin (don't ask),
for some reason, at Settings> sound> Inputs:
Brio 501 as "headset microphone"
... yet to install software that uses the webcam function.
...odd that there is no category for webcams under "Settings"
again, IFAIK