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So I got a monitor to use as an external for my MacBook Pro. It is an LG e2340 and I am connecting via HDMI by the way. Anyways, there are some issues I have found and I am wondering if there are any ways to remedy them.

  • In the mid-resolution range (1000horizontal-1600h) green lines appear in the dark areas of the external screen
  • In the high-resolution range(1600h-1900h) it seems like the monitor can't handle it because it is all black and the menu buttons don't work.

I tried to see how it fared in OSX and most of the same things were happening. I tried the 1080p option and it did the blank screen thing. Then I tried 1080i and what do you know it worked. I looked up what the i meant and found that it was interlaced so I went back to windows and looked through the advanced resolution options and found options for 1920x1080 (Interlaced) and it worked.

Things I have noticed though are that the refresh rate is only 30Hz so I can sometimes notice flickering, especially with Windows Glass.

So, after all of that, what do you think is wrong? Is there a way to increase refresh rate with interlaced? Or even better, how can I get 1080p to work?

Thanks a bunch

EDIT: It works with 720p so its not that its not capable of progressive. On the web page here it says Full HD 1080p = YES

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What model year is this MacBook Pro? – emb1995 May 22 '12 at 0:35
It is a 2011 15" – adamk33n3r May 22 '12 at 0:38
What are you using to connect the MBP to the TV (specifically, what kind of cable and adapter)? Are they Apple branded, or are they generic? – emb1995 May 22 '12 at 1:01
It is a generic mini port to hdmi cable – adamk33n3r May 23 '12 at 1:35
Have you tried official Apple adapters or other cables? I'm thinking this is because you have a bum cable that can't sustain high data rates. – emb1995 May 23 '12 at 1:46
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1 Answer

up vote 0 down vote accepted

It's probably a bad cable. Read the above comments for the discussion.

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It was a bad cable – adamk33n3r Jun 5 '12 at 17:53

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