No Audio

Discussion in 'Mac OS X Lion (10.7)' started by superericla, Apr 27, 2011.

  1. macrumors 6502

    Sep 27, 2010
    Recently when starting up my computer into Lion I have had problems with sound not being present. The startup chime does make noise, yet any videos and music played will produce no sound. Anybody have a clue how to fix this without reinstalling Lion? I'm using a 2011 base 15" MacBook Pro if that helps any.
  2. macrumors 6502a


    Jan 25, 2010
    Any programs you have set to run at startup? What are they? do they work perfectly with Lion?
  3. thread starter macrumors 6502

    Sep 27, 2010
    The only program I have set to run at startup is iTunes Helper which was automatically set to start at login.
  4. macrumors member

    Mar 29, 2011

    I also had issues with Lion DP2 (with update) and sound.

    The system was fine for a while, then all of a sudden, sound seems to break.

    iTunes wouldn't start, giving me the error:

    The iTunes application could not be opened. An unknown error occurred (-200).
    There was no sound in MPlayer (Video Player), Jitsi (VoIP Client) or in Flash (Chrome or Safari). However, there is sound in QuickTime, strangely enough.

    I had to do a full reformat to fix the issue *sigh*, did it once before, had to do it again tonight. (An attempted time machine restore left me with a broken machine, lol, hence the reformat).

    It would be nice to know what the root cause is.

  5. macrumors newbie

    Apr 27, 2011
    Same with me

    I'm having the same problem here. No iTunes + no sounds on internet videos or some apps. :(

    Not happy.
  6. thread starter macrumors 6502

    Sep 27, 2010
    I ended out just reinstalling. I suppose it's a somewhat common issue since that perfectly describes what was happening.
  7. macrumors member

    Mar 29, 2011

    Hmm, yeah, it is incredibly annoying *sigh*.

    Hopefully Apple will release an updated Lion Developer Preview DP3?

    Still not sure what's the trigger for this issue - my install of Lion is fine for a while, then suddenly the sound breaks.

    Apps I have installed:

    • Google Chrome (Dev)
    • Growl
    • Dropbox (Forum Build)
    • Mplayer
    • Skype
    • Jitsi
    • Java Runtime (For Jitsi)
    • Tranmission

    Do other people experiencing this issue have any of them installed? Hmm. Or it may just be a random thing.

  8. macrumors newbie

    Nov 9, 2009
    Same problem on a Mac Pro 2010. Connected via HDMI to a Pioneer amp.

    The whole Sound sub-system seems to be quite buggy in the 444 build.

  9. macrumors newbie

    May 1, 2011
  10. macrumors 6502a


    Aug 19, 2008
    Do your speakers still show up under sound settings in system prefs?
  11. macrumors newbie

    May 1, 2011
    Yes, internal and external Speakers are visible in system prefs.

    It looks like a QuickTime Player-Component is broken. When I start iMovie I get a message like: The QuickTime-Components are broken. Please reinstall.
  12. macrumors 68030

    Feb 26, 2011
    Cincinnati, OH
    It makes troubleshooting easy when you are told that something is broken :D
  13. macrumors newbie

    May 3, 2011
    Well, I think this is a now known issue as it seems that enough people know about it around the table, hopefully! I sure hope we see a fix for this stinker within the next few days. Seems that some people are having some luck killing coreaudiod, while other blokes aren't.
  14. macrumors member

    Mar 29, 2011

    It just happened to me again.

    This is with a fresh install of Lion (10.7) DP2, and the two updates to it as well (1Gb for each update) *sigh*.

    You'd think Apple would have nixed this issue in the second update to DP2. Anyway, guess I'll have to do another reformat and reinstall...again.

  15. macrumors newbie

    May 3, 2011
    Well interesting, I did not see this error on DP2 1st update, only in this 2nd update.
  16. macrumors newbie

    May 4, 2011

    Hey! Had the same problem. Booting the safemode (press shift while starting) and restart solves the problem on my mac.

    My single steps:
    restart in safemode
    open iTunes (what a surprise it didn't work ;) - but it started)
    login and everything is fine, now


    ps english isn't my native language - don't be mad with me :)

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