Macbook Pro retina + Samsung LED 24" external monitor

Hi all, I just bought Macbook Pro 13.3" Retina and im having some troubles.
When I connect those two via VGA adapter I see some strange artifact effect on external monitor.
I dont know hot to name that artifact but it is the same thing that you can see when you take your camera or smartphone and try to record old tv screen for example. You will see that parallel lines goes up or down. This effects is easy to notice when you put something with dark background on external monior (like Unity3D Pro IDE with dark skin in my case).
The interesting things are:
- when I switch external monitor from VGA adapter connection to HDMI-HDMI then everything works fine with no artifacts.
- when I'm using VGA adapter and connect Macbook Pro to another external monitor (AOC 24" LCD) then everything works ok aswell.
- when I take my Samsung LED monitor and connect it to another PC (Windows 8) with VGA everything works great.
So I belive that this issue is related to all three of them (MacbookPro + Sasmung LED + VGA adapter) and I really dont know who to blame and what to do.
Dose anyome have an idea how to solve this and what to do?]
thanks

Hi luisvf7,
So it seems you are having issues with your MacBook Pro not displaying properly on your external display. It does sound like a frustrating situation. Let’s see if we can get you up and running.
I would suggest that you use the steps in this article to troubleshoot the problem -
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Specifically the section - No video or no signal, image distortion, "snow," or flickering
Thanks for using Apple Support Communities.
Best,
Brett L

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Hello Community,
I've been experiencing a problem, I bought a 13' Macbook Pro Retina. Not quite a cheap machine.
But when I connect through HDMI to my HP 23xi , the screen gets blurry and cut. I tried messing with the configurations, but it simply won't get better.
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Hi luisvf7,
So it seems you are having issues with your MacBook Pro not displaying properly on your external display. It does sound like a frustrating situation. Let’s see if we can get you up and running.
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Something else to check ..
Open System Preferences > Network then select the Wi-Fi tab.
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message edited by; cs

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