On Wed, 4 Jan 2023 at 00:38, Takashi Iwai tiwai@suse.de wrote:
Thanks; that's helpful.
Could you try to revert the commit 9902b303b5ade208b58f0dd38a09831813582211 ALSA: usb-audio: Avoid unnecessary interface change at EP close
as a blind shot?
Also, there has been a series of fixes for other issues, and it might be worth to try as well: https://lore.kernel.org/r/20230102170759.29610-1-tiwai@suse.de
I built 3 kernels: one with the reverted commit, one with the patches you linked, and one with both. These builds were based on 6.1.2.
None of them worked. Also, even though I continued to boot with snd_usb_audio.dyndbg=+p, none of the kernel logs showed the debug messages that the other versions did. I'm baffled why this is.
I did notice that the order that the detected sound devices appeared in alsa was varying. That's probably not relevant though.
Links to logs:
Revert only https://hastebin.com/avinasiruj.apache
New patches only https://hastebin.com/aqepesokam.apache
Both https://hastebin.com/igilaqujus.apache
-- Michael