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I have a Lenovo T530 laptop. When I connect an external moniter, it detects moniter for a second and then does not detect. The screen is detected then lost repeatedly so both displays keep blinking on and off.

What could be the cause of this?

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What drivers are you running? Do you have the T530 with the optimus nvidia or only integrated gfx? – nerdwaller Feb 4 '13 at 16:43

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