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I have a small Sony TV which is colour balanced for video editing. Note: it does not have DVI or HDMI ports.

When I plug it into an iMac using VGA and the Mini Display Port adapter, it is fine (using the native resolution).

However, when I plug it into my MacBook using the same setup, it is unable to determine the correct resolution for it. (It thinks it is 4:3 and uses 1024x768, but in fact it is 16:9.)

Anyone know how I might fix this problem? There are no alternatives in the display settings.

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  • Might apple.stackexchange.com/questions/35324/… or apple.stackexchange.com/questions/48488/… be equivalent issues? Also Apple's FAQ has a troubleshooting section/link at the bottom of the page that might help narrow down what has been tried to narrow the issue.
    – bmike
    Commented Jan 3, 2013 at 18:16
  • The first one says that VGA won't drive high resolution displays, and the second one doesn't really say anything. The point is that this monitor does work with an iMac using exactly the same setup, just not with my Retina MacBook Pro 13"
    – Alfo
    Commented Jan 4, 2013 at 10:19
  • Are you using synchronized display?
    – Rob
    Commented Mar 12, 2013 at 12:09

1 Answer 1

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Not all monitors are the same - I bought a monitor from a friend to use for extra screen space space with my 13"MBP (Mid 2009). It was a nice VGA widescreen LCD monitor but no matter what I tried my MacBook Pro could not send any kind of signal to it. All connectors were verified to work perfectly well and the monitor also worked perfectly well when attached to a nearby PC...

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  • Hmm - so a monitor that didn't work could mean that other monitors don't report resolution correctly? It could be a VGA signaling hardware issue I suppose.
    – bmike
    Commented Jan 3, 2013 at 23:39
  • But if it works on one, why wouldn't it work on another?
    – Alfo
    Commented Jan 8, 2013 at 22:09

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