Dear support,
I have two P2415Q and one of them sometimes wont wake up from standby (I do not have case when both at same time wont wake up).
If on of them dont wake up, then buttons on that monitor do not work too --- only way to get it work again is to disconnect and reconnect power cable. Switching display cables wont help. Restarting computer do not help --- monitor dont respond.
Problem started 2 weeks after use and it is going worst, it happends more often.
I have 2015 MacBook Pro 15" and both monitors are connected mDP -> DP (using cable which was included with monitor).
Thanks in advance!