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  1. #1

    Member Since
    May 29, 2009
    External monitor flickering
    I hooked a 22inch monitor to my macbook pro via the mini display port/VGA and a VGA to VGA to the monitor. It keeps flickering. I'll be using it for 5 mins and the external monitor will shut off and 5 seconds later turn back on. It will do this every 5 mins. I tried my sisters PC on it and it does not flicker. But with that, she bypasses the Mini display adapter and goes only VGA to VGA. Is this an issue I can simply change a setting to? Does anyone else have these problems?

    I dont know if this is helpful, but the monitor is a V7 R22W02-R and these are the specs I could find:

    Screen Size: 22 in
    Included Interfaces: Audio - Line In, Video - 15 pin High-Density D-shell (VGA), Video - 24 pin DVI-D
    Aspect Ratio: 16:10
    Resolution: 1680 x 1050
    Response Time: 5 ms
    Contrast Ratio: 700:1

    Display Panel

    Contrast Ratio: 700:1
    Brightness: 280 nits
    Horizontal Viewing Angle: 170 degrees
    Vertical Viewing Angle: 160 degrees
    Display Refresh Rate: 60 Hz
    Response Time: 5 ms
    Viewable Size: 22 in
    Aspect Ratio: 16:10
    Max Resolution: 1680 x 1050
    Diagonal Size: 22 in


    Interface Connection: Audio - Line In, Video - 15 pin High-Density D-shell (VGA), Video - 24 pin DVI-D

  2. #2

    chscag's Avatar
    Member Since
    Jan 23, 2008
    Fort Worth, Texas
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, El Capitan
    Flickering could be due to a poor connection from the mini display port adapter to the VGA cable. Make sure the mini display port adapter is securely seated on both ends and that the VGA cable is likewise. If necessary, swap out the mini display port adapter for another.


  3. #3

    Aptmunich's Avatar
    Member Since
    Mar 09, 2004
    Aluminium Macbook 2.4 Ghz 4GB RAM, SSD 24" Samsung Display, iPhone 4, iPad 2
    I had a miniVGA adapter that used to do that... so I'd also try swapping out the adapter.

    If it's mini Displayport, you've probably not had it that long, so perhaps try taking it to an Apple store.

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