amd GPU not detected (but visible in device manager) when used with nvidia GPU

tintin92

Prominent
Jun 27, 2017
2
0
510
Hello!

Let me introduce you my issue.
Lately I've been practicing GPU acelerated computing using OCL. One thing lead to another and so I had to buy amd gpu. I got R9 390 from a friend of mine for good price.
So now I have in my PC GTX1060 (connected to monitor) and R9 390.
I'm using R9 390 to perform OCL computation and 1060 for a normal usage...

The problem is that I am unable to manipulate R9 390 fan curve in any way (using afterburner and similar tools) if R9 390 is not connected to a monitor. Furthermore, amd readon settings declare that no amd gpu is present if r9 390 does not have monitor attached.
BUT I can use this r9 390 without monitor being plugged in it for my OCL stuff...

So the question is... is there any way of "waking up" r9 390 so system (win7 64bit, 8gb ram, 1600W psu) will notice it as when monitor is plugged in, without using a display dummy plug (attaching a monitor to it rises temperature a bit too)?
I'd like it to run a bit cooler.
I have tried all drivers on AMD old drivers donload page from 15.12 on... same result everywhere.

Many thanks :)