I believe this is a problem with the open-source ATI drivers. As a workaround the proprietary ones support the necessary shaders (some of which are unsupported and are the reason for crashing the game).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/656045 Title: Minecraft crashes, fairly randomly [SIGSEGV (0xb)] -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
