(In reply to Maxim Sheviakov from comment #5)
> Umm, the game doesn't hang the system. It's about the game's process not to
> respond at all - I can simply go to desktop and kill the process. I don't
> think that gdb attachment would help either, [...]

Of course it would; it would show us whether it's hanging in game code or
driver code. From Jos�'s comments it sounds like it's likely the former though.