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I want to play on Minecraft servers, I can get on, but can't do anything, I can only play like one day per month. Do I need the latest version of Java or something? I am now using OpenJDK Java 7 Runtime to play Minecraft. By the way, the happened after I turned off my computer during the upgrade to 14.04 LTS. Before it was all normal. And now I am back to 12.04. Thanks to whoever that helps.
I already got Java 8 but there's a problem, I can't even play Minecraft now! When I go in one of my worlds this comes out:
AL lib: (EE) alc_cleanup: 1 device not closed pure virtual method called terminate called without an active exception
Now what? :/