T520 display blanks and blinks when plug/unplug the power

the subject says it all.

brand new t520 with optimus (nvidia + intel) display adapter, display of 1920 x 1080.

whenever I have more in or unplug the power, the white for about 2 seconds, then flashes back on.

the problem occurs if the bios setting is integrated, discreet, or optimus and th problem occurs even if the display settings are the same in the profile of AC and battery power.

is this normal? It's very BAD.

Thanks in advance.

George

Looks like he made the 50 Hz / 60 Hz switch...

Tags: ThinkPad Notebooks

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