Display Port issue

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my monitor not sleep when connected via dp. screen goes black wakes in 5 seconds , on , over. if power monitor off, "no signal detected" when attempting wake up. nmp wakes without issue seems sort of communication issue. hoping here help. monitor lg 34um94. dp input , of course 1 want use :roll eyes:

anyway, if has idea is, appreciate help. ;)
 

i had similar issue dell monitor connected via displayport.

try unplugging display port cable , power cable.

press , hold lg monitor's power button couple of times "reset" it.

plug , give try?

worth shot.
 


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