With the new 1.1 release (188.8.131.520) of Kerbal I'm facing a couple of problems which I didn't encounter before. I'm running Ubuntu 14.04, unmodded Kerbal, AMD R9 280 graphics with AMD provided proprietary binary driver version 15.302 from their website. I have installed the game through Steam.
1: Launching the game
Launching the game initially gives me a black screen (before the loading indicator screen). This black screen dies and the program ends, without writing anything to the log other than initial hardware info. I was able to get around this by meddling with the command line switches a bit. -force-gfx-st makes it work. LC_ALL=C %command%_64 -force-gfx-st 2: Ground missing
My Kerbin's ground went missing for the most part. This is a bit trickier. First I was suspecting all sorts of graphical options as the culprit, but then I went and disabled everything but the bare necessities and still was getting this. The ground disappears for the most part. It reappears if I zoom back very far from it. Also, the void of the ground somehow seems to be physicsless. I taxied an airplane to the void, after which the plane was just stuck in position on it, regardless of engine power or other controls. The following link is a screen shot of the ground, or rather the lack thereof.