On Tue, 03 Jan 2023 16:05:18 +0100, Michael Ralston wrote: > > On Wed, 4 Jan 2023 at 00:38, Takashi Iwai <tiwai@xxxxxxx> 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@xxxxxxx > > > > 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. That's weird. Is snd_usb_audio driver bound with the device at all? That is, does it appear in /proc/asound/cards? Takashi
