Thank's a lot for this very useful Thread - now everything works good enough to enjoy the game :-) I had encountered most of these issues and several others. So just to mention it, i now run KSP on an 64Bit Xubuntu an a Laptop with Nvidia Optmus-Technology through Steam...nativly After Steam released L4D2 Beta for Linux i thought, this would be the right moment, to switch my entire IT (Thinkpad, Gaming-Laptop, Fujitsu-Workstation) to Linux and finally to leave Dual-Boot behind. And after i did this, i found KSP...so after reading forum-threads about "is it worth buying", the decision was pretty clear. And i didn't regret it... So SQAUD, thanks alot, that you brought KSP to Linux too. I think, this is going to be a step, you won't regret... keep going, you are my heros (around several others ;-)