I installed Ubuntu 12.10 yesterday on my computer and everything is working fine apart from my GPU fan. For some reason, it spins to what sounds like 100% and just stays there no matter what I do. I dual boot Windows and I use CCC. I keep my fan speed at a constant 50% and the hottest it gets is about 60C which I think is fine. Why is Ubuntu doing this? I was going to install the propriety drivers but I read that they don't work yet. Anyway of solving this?
Try to install kernel 3.7.0.
I installed Ubuntu 12.04 and had the same problem with a 5750 card, constant fan noise seemingly 100% fan speed and high temperature (I've had a maximum of 70 degrees!).
Installing kernel 3.7.0 along with