Same problem with Dell Inspiron 9300. $ tail -2 /proc/asound/oss/sndstat Mixers: 0: SigmaTel STAC9750,51 lspci: [...] 0000:00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03) [...] -- No sound on Inspiron 9400 with Dapper https://launchpad.net/bugs/37287