External monitor issue

Discussion in 'MacBook Air' started by davidino77, Mar 6, 2008.

  1. davidino77 macrumors newbie

    Joined:
    Feb 1, 2008
    Location:
    Italy - Milano
    #1
    Hi guys,
    I'm using my MBA to watch movies on my fullhd TV.
    I use the dvi interface to connect to it at 1920 x 1080.
    The problem is about the frame rate that after 10 / 15 minutes of flawless palying, drops consistently. I've tried VLC and QT with Perian but the problem is the same.

    The only way I can use it, is activate the mirroring function and keep the resolution to 1280 x 800.

    The strange fact is that the cpu is quite free and the temperature never goes more than 62 celsius.
    I think that the problem could be an overheting of the video adapter. The fan, while I watch movies, is stick to 6200 rpm.

    Ideas?
    Does it happen only to me?
     
  2. davidino77 thread starter macrumors newbie

    Joined:
    Feb 1, 2008
    Location:
    Italy - Milano
  3. malone macrumors member

    Joined:
    Jan 24, 2008
    #3
    Howdy there.

    No, you're not the only person with this issue. I (and others) have had it too. The MBA can handle it at high resolutions when it's running at full performance (e.g., 1.6/1.8 GHz), but it can't maintain heat dissipation at a full load on full performance. To compensate, it scales down its processor when it gets too hot, which is why the temperatures look fine, but your video starts to stutter.

    I have mine connected to a 24" 1920x1200 display. Whenever I play movies on it, I just lower the resolution to something more manageable for the MBA (800x500), while keeping the MBA display on (if I need to do work).
     
  4. davidino77 thread starter macrumors newbie

    Joined:
    Feb 1, 2008
    Location:
    Italy - Milano
    #4
    Ok, so it's quite usual. That's a pity because I love this computer but heating issues are really frustrating.
    Thank you Malone


     

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