How's it going dudes? I bought a Logitech C270 webcam from Argos about a year ago, which, according to the LKDDb [1] and U.V.C. driver website [2], should work well on Linux. Despite working flawlessly until recently, some strange behaviour has appeared.
When I connect the webcam, `dmesg` registers it as would be expected (timestamps
omitted):
usb 3-7: new high-speed USB device number 14 using xhci_hcd
usb 3-7: New USB device found, idVendor=046d, idProduct=0825,
bcdDevice= 0.12
usb 3-7: New USB device strings: Mfr=0, Product=0, SerialNumber=2
usb 3-7: SerialNumber: 9EEFE4E0
uvcvideo: Found UVC 1.00 device <unnamed> (046d:0825)
input: UVC Camera (046d:0825) as
/devices/pci0000:00/0000:00:14.0/usb3/3-7/3-7:1.0/input/input27
usb 3-7: set resolution quirk: cval->res = 384
However, about two seconds later, me having done nothing, the kernel ring buffer
suggests it has been physically unplugs, and thus deregisters the device...
USB disconnect, device number 14
I have tested this on another very similar machine, and this problem is not to
be seen, and everything works perfectly; thus ruling out a hardware issue with
the camera. Furthermore, no other devices---even other U.V.C. webcams---do not
present with the same symptoms on my machine, in the same U.S.B. port; thus
ruling out any issue with the physical port or motherboard controller.
I have no idea how to triage this further. I feel like my head has been nailed
to a coffee table by Dinsdale Piranha. Any tips? My kernel is 5.9.13-zen1,
although this trouble presents identically on a vanilla kernel.
Cheers.
Hope everyone is remaining well.
[1] https://linux-hardware.org/index.php?id=usb:046d-0825
[2] https://www.ideasonboard.org/uvc/#devices
--
Ashley Dixon
suugaku.co.uk
2A9A 4117
DA96 D18A
8A7B B0D2
A30E BF25
F290 A8AA
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