Low sound on ASUS F3Sc in Ubuntu

[fooddieting]

I have installed Ubuntu Gutsy on an F3Sc. Everything worked out-of-the box, but the sound is very very low. When I turn both PCM and the volume slider to the top, the volume is about right for watching a movie with headphones (Koss Porta Pro <- easy to drive). Doesn't this seem to be way lower than it should be?

I haven't tested on Vista (and it's currently broken on my laptop), but could someone tell me if the sound is higher there?

I see there is a Speaker Volume setting in BIOS, but this only affects the volume used during system startup, right?

Anyone else had problems with low volume on ASUS laptops (with intel hd audio) running Linux, and more important, have anyone of you solved it??