All is perfect, 96 fps average. Until an item tries to enter a buildcraft pipe. Tekkit instantly crashes, no error dialog. I have no idea what logs to look at for information on the crash, or how to fix it. OpenGL is enabled in KDE, Driver package is nvidia-304xx lspci output: VGA compatible controller: NVIDIA Corporation GT218 [Quadro FX 380M] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Device 172b Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at d2000000 (32-bit, non-prefetchable) [size=16M] Memory at c0000000 (64-bit, prefetchable) [size=256M] Memory at d0000000 (64-bit, prefetchable) [size=32M] I/O ports at 5000 [size=128] [virtual] Expansion ROM at d3080000 [disabled] [size=512K] Capabilities: <access denied> Kernel driver in use: nvidia