Well, I should be using the proprietary fglrx driver. I'm not using radeon, I'm definitely using fglrx. Anyhow, further to my post of last time, here's a run from a brand-new 0.20.2, freshly installed and with .config/unity3d/Squad/Kerbal Space Program renamed so that that directory gets recreated. Console output: ---- fatty$ cd /Fedora/home/viking/bin/KSP_linux/ # ^^^ that directory is stored on another drive, I'm running this under Ubuntu 12.10 fatty$ LC_ALL=C ./KSP.x86 Set current directory to /Fedora/home/viking/bin/KSP_linux Found path: /Fedora/home/viking/bin/KSP_linux/KSP.x86 Mono path[0] = '/Fedora/home/viking/bin/KSP_linux/KSP_Data/Managed' Mono path[1] = '/Fedora/home/viking/bin/KSP_linux/KSP_Data/Mono' Mono config path = '/Fedora/home/viking/bin/KSP_linux/KSP_Data/Mono/etc' Aborted (core dumped) fatty$ ---- End of Console output ---- KSP.log (311 bytes): ---- Kerbal Space Program - 0.20.2.0 (LinuxPlayer) OS: Linux 3.0.0-20-generic-pae Ubuntu 12.10 32-bit CPU: Pentium® Dual-Core CPU E5200 @ 2.50 GHz (2) RAM: 4027 GPU: ATI Radeon HD 3400 Series (187MB) <=== (and the card's supposed to have 256Mb on) SM: 30 (OpenGL 3.3 [3.3.11672 Compatibility Profile Context]) Log started: Fri, Jul 12, 2013 20:15:39 ---- End of KSP.log ---- First run of: >> LC_ALL=C ./KSP.x86 << yields this Player.log in /home/viking/.config/unity3d/Squad/Kerbal Space Program/Player.log http://pastebin.com/z8VYv2wB Second run of >>LD_PRELOAD="libpthread.so.0 libGL.so.1" __GL_THREADED_OPTIMIZATIONS=1 ./KSP.x86 << yields this Player.log: http://pastebin.com/ud0p8EpG I seem to get a window opening, but nothing visible in that window, then I get (in the console) Aborted. No doubt the second run of player.log shows something more important than the first, which doesn't seem to be very useful. I also can't find a coredump file anywhere. I may have to rerun this once I figure out how to actually save them. (Post 6)