Hi!
OK, then another thing I would check is to try different sample rates (e.g. via playing WAV files over PA).
Like this?
pavel@amd:/usr/share$ pacat ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=48000 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=44100 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=32000 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=16000 ./sounds/alsa/Front_Right.wav pavel@amd:/usr/share$ pacat --rate=8000 ./sounds/alsa/Front_Right.wav
This seems to have behaved as expected.
Hmm. You might see a difference when comparing /proc/asound/card*/pcm0p/sub0/* files between working and broken cases (while playing something).
Other than that, I have no idea. A bisection would be needed, I'm afraid.
:-(.
To make it more fun, it now appeared on x60... it looks like it has something to do with starting browser early after boot.
Restarting the browser seems to fix it.
Best regards, Pavel