Update to 10.6.4 Broke Audio over Mini DisplayPort

Discussion in 'MacBook Pro' started by machiabelly, Jun 23, 2010.

  1. machiabelly macrumors newbie

    May 15, 2010
    I use a Moshi Mini DisplayPort to HDMI adapter (as recommended by Apple Care) to output 1080p with audio over hdmi via mini displayport on my 27" iMac (core2Duo model). Upgrading from 10.6.3 to 10.6.4 has caused me to lose the audio through the Mini DisplayPort. I had been getting both audio and video perfectly fine until this upgrade and now in system preferences, only the internal speakers are given as an option. In other words, 10.6.4 seems to have broken my audio out by removing the choice.

    No other system changes have been made that could account for this. I'm using the same cables and tv. I've reconnected everything, rebooted and also power cycled the tv, all to no effect. Has this happened to anyone else? Does anyone know a fix?

    Please help!
  2. iLog.Genius macrumors 601


    Feb 24, 2009
    Toronto, Ontario
  3. machiabelly thread starter macrumors newbie

    May 15, 2010
    Thank you for the suggestion, unfortunately, no change. Still no audio. I checked on Apple.com forums and seems like other people are having the same issues. It is definitely an issue with the 10.6.4 update. Hoping someone has a fix!

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