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    screen flickering when connecting hdmi to lcd tv

    Discussion in 'Alienware 17 and M17x' started by od37, Aug 2, 2010.

  1. od37

    od37 Notebook Enthusiast

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    My m17x will randomly start to flicker like crazy when attached through HDMI to my LCD TV. It happens 1 out of 10 times when trying to connect. Have any of you guys experienced this before?
     
    od37, Aug 2, 2010
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  2. isamura

    isamura Notebook Guru

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    Yes, I am experiencing the same exact thing, but I'd say it happens like 1 in 3 times. I have nearly identical setup as you, and have never had this problem until I installed the 10.7a beta drivers. I've since tried going back to the dell stock drivers, but the problem remains.
     
    isamura, Aug 5, 2010
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  3. calingasan

    calingasan Notebook Geek

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    Welcome to our world!
     
    calingasan, Aug 5, 2010
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  4. isamura

    isamura Notebook Guru

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    Heh, this is actually a different type of flickering than what I've read about the 5870's. My entire screen blacks out, the HDMI losses connection completely from the TV.

    I just replaced my HDMI cable and it hasn't done it yet, I'll report back if and when it "does it".
     
    isamura, Aug 5, 2010
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  5. od37

    od37 Notebook Enthusiast

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    the flickering goes away when you open the m17x lid..weird
     
    od37, Aug 10, 2010
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  6. DarthRyo

    DarthRyo Notebook Geek

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    One thing I've noticed is that many performance issue (including the ones with external display) are due to power management and stuff like Stealth Mode.

    I also had problem watching movies (with HD sound) when stealth mode was enable or not... the behavior of this laptop is weird but I tried to understand it. Here are a view points to check:
    1) stealth mode status (there is a small utility very usefull on this forum for that, try a search with stealth mode - i'll try to post this once I find it again cause I forgot where it is posted).
    2) PowerPlay option in ATI CC => depend of the power mode used, check that you have selected best performance and not best Battery (I messed up with it without knowing, then I figured my laptop was running to save battery life even when plugged)

    What I think is ATI sucks at managing external display (my nVidia 8800M was doing great on my previous laptop)
     
    DarthRyo, Aug 11, 2010
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