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U2410f - blinking touch sensitive button (5th from the top)
When notebook is connected through the hdmi or the vga in active or sleeping(idle) mode the lower sensory button (5th from above) starts chaotically blinking. If another notebook or different device is connected then it works normally without blinking
DELL-Chris M
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May 6th, 2011 15:00
If it did it with both notebooks and the other device I would say it could be a monitor issue. But it only occurs with one notebook. Ask the guys here.