Comment 22 for bug 1966066

Hello folks,

Can you give the following test kernel a try, which contains a possible fix:
https://github.com/torvalds/linux/commit/23939115be181bc5dbc33aa8471adcdbffa28910

Steps:
1. Remove the workaround that you made and make sure you have this issue in Focal / Impish 5.13.0-37
2. Download kernel deb files here based on your current distro, put them into a new directory:
   focal - https://people.canonical.com/~phlin/kernel/lp-1966066-usb-audio/focal/
   impish - https://people.canonical.com/~phlin/kernel/lp-1966066-usb-audio/impish/
2. Roll back to 5.13.0-35 by selecting the corresponding entry in GRUB
3. Remove the 5.13.0-37 kernel, otherwise it will complain about a version conflict:
   sudo apt remove linux-image-5.13.0-37-generic linux-image-unsigned-5.13.0-37-generic
4. Install those deb files in Step 2, with command:
   sudo dpkg -i linux-*5.13*.deb
5. Reboot to this test kernel and check the version number with `uname -vr`, it should be something like:
   5.13.0-37-generic #42+lp1966066 SMP Tue Mar 29 02:54:38 UTC 2022
6. Test your audio and see if it helps

After your test, you can undo this change by:
A. Rolling back to 5.13.0-35 again
B. sudo apt remove linux-image-unsigned-5.13.0-37-generic
C. sudo apt install linux-image-5.13.0-37-generic

Thanks!