Windows 10 Secondary Monitor not wake up

[aroor]

Hi have dual monitor setup for windows 10. but when sleep mode on, after wake up the PC only the primary monitor is waking up. other monitor not working.
It was ok when i was using windows 8.1. but it causing problem after windows 10 installed. I already updated all drivers including display drivers. is anyone having the same problem?

This is the current setup i'm having now

 

[Phil Rowlinson]

I'm having exactly the same problem.
I have 3 monitors connected to my Lenovo docking station. My graphics card is teh Intel HD Graphics card and no wimmediately post Win 10 upgrade, every time the system wakes, one of the monitors (most frequently the primary one) has been lost. I have to go to the HD graphics control panel to reactivate it since the standard windows display has forgotten it completely.