Hello, I've got problem with sound on my Powerbook G4 Titanium (PowerBook3,5). Sound always cranks and skips when I moving my touchpad, regardless of the source of sound. It happens in all my programs, including vlc, mplayer, e-uae and ioquake3 - they show in the log messeges like "underrun occured" and "broken pipe". If I remember correctly, this bug appears on kernel 2.6.32-5 (from Debian Sqeeze) and later. On kernel 2.6.38 from Ubuntu sound works _almost_ normally (cranks occur rarely).
I used also mpd server, but it breaks after sound cranks (ncmpc shows "Timeout") and I can only restart mpd server (/etc/init.d/mpd restart) to get mpd working (for some time). Log from alsa-test.sh in attachement. Sorry for my English :) Best regards, Петр метель
alsa-info.txt.zUlUP5eQPO
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