OK -- I've messed with my system some, and I'm trying to get it back to "normal" without doing a complete reload.
Primarily, I'd be interested in knowing if there's some software package that could be reinstalled to convince my keyboard volume +/-/mute buttons to work again. I remember them working briefly, including showing a transparent splash screen showing what was happening to the volume. But I'm not sure when I saw that -- post install of Linux Mint XFCE Elyssa, or after successful upgrade to Gloria (I never was able to get a GUI to work as I passed through Felicia), or maybe it was just as I was playing with live CD's.
I now have a Gloria install disk, but I'm saving that for a last resort. Most of my current configuration is working fine, so I don't want to play too much with it. Sound is working, but only when controlled through the mixers. I'd like to have the hardware buttons work for when games have taken over full-screen mode, and I can't readily get to the mixers.
Thanks in advance!