OK. I guess I'll be the first. I know this isn't even beta, but I was desperate.
- Ubuntu 13.04
- Satellite U845-S406
From the day I bought this ultrabook it was clear that I could not use Ubuntu on it... until now!
Any derivative of Ubuntu (both 12.04 and 12.10) would overheat, lock up, and shut down my Satellite. I had to use OpenSuse because Fedora would not recognize certain hardware without jumping through some hoops.
I was desperate to get back to Ubuntu, so I figured, "Why not try the most recent and unreleased?" 13.04 has run perfectly so far. It seems to have the right kernel and driver fixes to keep it running at an optimal temperature. Unlike 12.04 & 12.10, 13.04 recognized my Ivybridge graphics immediately (from the live thumb drive... the other two simply said unknown, even after the installation).
Some good things on the horizon with 13.04 it seems!