Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-meta-hwe-5.13 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1962223
Title:
uvcvideo Failed to query (GET_DEF) UVC control 2 on unit 1: -32 (exp.
1)
Status in linux-meta-hwe-5.13 package in Ubuntu:
Confirmed
Bug description:
Connecting a magnifying webcam (cheap microscope) fills the journal
with the message "Failed to query (GET_DEF) UVC control 2 on unit 1:
-32 (exp. 1)". It also makes amdgpu driver to start to write Fence
"fallback timer expired on ring gfx" and on ring sdma0/sdma1. This
corruption or whatever happens produces microstuttering and
video/audio framerate loss, like it is reading the same audio buffer
two times and then catches up to the current stream position.
Because the device was not connected at the time of filing this bug, I
have attached an extra file with the output of "lsusb -d a16f:0304
-v".
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-generic-hwe-20.04 5.13.0.30.33~20.04.17
ProcVersionSignature: Ubuntu 5.13.0-30.33~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-30-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Feb 24 22:09:07 2022
InstallationDate: Installed on 2014-06-05 (2820 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: linux-meta-hwe-5.13
UpgradeStatus: No upgrade log present (probably fresh install)
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