[other] Linux Mint: Volume Control Buttons Not Working

view story

http://ubuntuforums.org – Hi, I have a Sony Vaio Laptop, Model VGN-FE880E. After installing Linux Mint 11 (Katya), the volume control buttons above my keyboard are useless. I believe it should be noted that, while the mute button also does nothing, it toggles the mute light that's built in to the button on and off. Also, the volume and mute buttons did work in Natty. So my question is, does anyone know what controls this or how it's controlled? Not a big problem, but one worth looking at and learning from :D. Thanks, Taco (Hardware)