I got GSB throught the Humble Bundle 4. Running on Kubuntu 11.10 64 bit with ATI graphics card.
The game runs very smooth, but I get random lockups of the mouse, keyboard and screen. This happened the first time after maybe 40 minutes during battle. Then after starting the game and just having entered options dialog. And a third time in windowed mode during battle.
When this happens the music continues playing, but there is no reaction by keyboard/mouse. I can still log in to the machine via ssh, but killing GSB does not unfreeze. xorg is at 100% CPU, unable to kill it. The only solution I found so far is to reboot (lucky I have ssh, so I can do that without hard reset).
Anyone else experiencing this? I cannot check on different linux hardware, as GSB does not appear to run on 1024x600 (netbook). Is this correct? Getting a “Could not set video mode” infobox.