I know that by hitting Fn+F3+T it fixes sound but whenever I launch minecraft again the sound isn't working again, is there any way to fix it pertinently? I'm running OptiFine and a slightly modified version of the faithful 32 resource pack. I don't want to turn them off. Also speaking of my resource pack after I added in a custom sky I haven't had any darkness, is there any fix for that? Thanks for the help.