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My external monitor appears like in image on random time, I have to power off the monitor and on again to get working. It is making me crazy.

enter image description here

I am using:

  • Macbook pro 2012 model
  • external monitor (SAMSUNG SyncMaster P2250) using DVI cable with mini display port.
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When did it start? Does it happen when certain things occur? Have you tried a different cable? How old is the monitor? –  Taegost Jul 31 '13 at 17:19
    
Have you tried just reconnecting the cable? It occured sometimes with my Macbook too. –  IOXenus Aug 1 '13 at 4:29
    
I am getting this for 6 months approx, and it just occur randomly. I had tried with different cable, but happening same. Monitor is nearly 2 years old. Yes I had tried with reconnecting cable, it works for few time only. –  Pravat Maskey Aug 1 '13 at 4:29

1 Answer 1

up vote 0 down vote accepted

I have not exact answer for my own question, but my problem got solved , may you guys have better explanation,

I was using monitor with powered by UPS, and when I moved this monitor to my friends home, problem is not happening again.

seems, is there problem with electricity source ?

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