Headphone Jack Usage on i5/i7 iMacs makes 1 core crazy

Discussion in 'Windows, Linux & Others on the Mac' started by bamtan, Jan 19, 2010.

  1. bamtan macrumors newbie

    Joined:
    May 16, 2009
    #1
    I didn't see this on here, so I thought I'd post it just so people are informed of some trouble the headphone jack is causing on the new iMacs when under Windows:

    http://discussions.apple.com/thread.jspa?threadID=2239832&tstart=0

    Basically, using the headphone jack fully utilises one core. I wondered why my iMac was heating up when I wasn't even running a game in Windows. If you want to test it for yourself, load up Task Manager, plug some headphones in for a few seconds and watch.
     
  2. csnplt macrumors 6502

    csnplt

    Joined:
    Aug 29, 2008
    Location:
    Chicago Area
    #2
    Mine has the same problem (i5 2.66 GHz). 0% CPU when no headphone jack is plugged in, but 30-60% when it is.
     
  3. csnplt macrumors 6502

    csnplt

    Joined:
    Aug 29, 2008
    Location:
    Chicago Area
    #3
    I fixed this by slightly pulling out the audio cable, as described on the thread you linked to. Thanks!
     

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