My macbook sound isn't working! Help please!

Discussion in 'MacBook Pro' started by randomuser1, Dec 12, 2011.

  1. macrumors newbie

    Joined:
    Dec 12, 2011
    #1
    Hi! My Macbook Pro's sound suddenly stopped working earlier today. I was on YouTube and the sound was working perfectly fine, but when I went to another video the sound stopped working. I thought it may have just been the video itself so I clicked on another video. Again, no sound. I unplugged my ear buds and turned the volume up. No sound. I went to iTunes and tried to play some music. No sound. I thought that maybe my computer was too outdated so I did a software update and restarted my computer a few times. Each time I restarted the welcome sound DID appear. I don't know what's wrong! Does anybody know what's wrong and what I can do to fix it? That would be great. Thanks. :)
     
  2. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
  3. macrumors 6502

    Joined:
    Jun 13, 2007
    Location:
    Nottingham, UK
    #3
    I've regularly had to do a...

    sudo kill -9 `ps ax|grep 'coreaudio[a-z]' |awk '{print $1}'`

    ... in the terminal after watching YouTube videos under Lion because the entire audio subsystem fails.

    A reboot works just as well, of course, but is significantly more distruptive.
     

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