I also see this bug; I'm uploading the ALSA info as per DebuggingSoundProblems from the Wiki, since no one else seems to have done this. I'll also add an strace of alsamixer failing, on the off chance that's useful.
I also see this bug; I'm uploading the ALSA info as per DebuggingSoundP roblems from the Wiki, since no one else seems to have done this. I'll also add an strace of alsamixer failing, on the off chance that's useful.