I'm using Ubuntu Linux 5.10 on my laptop (I'm planning on upgrading to 6.06 but I want to get the bugs out of 5.10 first) and the volume control is kind of screwy. I've had this issue with other distros as well (Suse, Debian, and Mandriva)
The volume up and down keys (Function up/down) work and it does change the Master volume. But that doesn't actually change the volume. There are only two things that change the volume, PCM and Headphone.
Does anyone know how to fix this? Or maybe make the volume control buttons change PCM. I've tried searching for this but haven't found anything yet.