I am running Kerbal Space Program on Linux, and I have a ATI Radeon HD 4770 video card. I was running the open source drivers. The game worked fine in 0.19, but after upgrade to 0.20, game quits on start, or when entering Preferences, while 'Loading' animation is running, with the output "Aborted(Core dumped)" or just "Aborted". I solved this issue by creating a new partition on my hard drive, and installing Mint 13 Xfce edition on it. It can be any disto that uses Kernel 3.4 or lower. This is because the Catalyst drivers for HD4770 supports kernel versions up to 3.4. Check this by typing "uname -r" in a terminal. After installing the proprietary drivers, the game works fine. Every other Steam game that I've tested also works fine, and even a little better now. Specifically for me (probably): I had to use 'sudo amdcccle' in a terminal to enable dual screen since catalyst with administrator rights doesnt run from the menu, and change sound output to optical out using 'pavucontrol' to get any sound because Sound preferences was missing from the menu. 1. Install any version of Linux that uses kernel version 3.4 or lower 2. Enable proprietary video card drivers 3. Install steam & download KSP 0.20. 4. Profit I hope this can be of use to someone :-)