Windows 10: BSOD when trying to enable integrated graphics and dedicated GPU

I am on a fresh install of windows 10 x64 build 1809

I have an AMD 2400G and RX 570 on an ASrock AB350 board. I want to have my primary display monitor plugged into the 570 and the 2nd monitor plugged into the motherboard display to use the iGPU. I had no problem doing this years ago on win 8.1 and an old APU.

The display driver for both gpus is the same file from AMD support. I updated to the latest chipset driver from AMD and am on a recent BIOS version that supports the CPU.

If I pull the 570 card out of my system and just plug into the onboard it displays fine. But if I force enable the iGPU in BIOS windows boots into a BSOD. SYSTEM_SERVICE_EXCEPTION and it lists the file atikmdag.sys which I think is what crashed.

So I know there is nothing faulty with the CPU and the display driver for each GPU alone, but something is preventing them from being used at the same time. So far I have not gotten any help on the AMD support or ASrock support forums so I am hoping someone here will be able to shed some light on this issue.

:)

 

Cant use dedicated gpu

Hello I'm trying to use my dedicated GPU in place of my integrated but after I saw this




I had no clue what to do so I went into my BIOS to change it and there was integrated and switchable listed I picked switchable and still nothing now I'm here hoping somebody can help me.

I'm running windows 10 home version 1903, integrated gpu=intel graphics 3000, dedicated=AMD radeon graphics HD 7670M

 

Integrated vs Dedicated GPU Query

Ok, thanks for the advice, it's good to know the fan is supposed to whir up and that the integrated GPU should do the job.

I followed the advice and set firefox on nvidia via control panel just to see what happened in task manager processes and if the fan still kicked in. It did and with the same level of noise but the GPU usage was showing much lower, (around 30%) and in processes it showed both nividia and integrated usage simultaneously, which was unexpected but perhaps the integrated may be other processes that are running rather than firefox. Although I can't think what.

Having looked through the nvidia control panel which is set to Global settings 'auto-select: Integrated', and then scroll down the list of programs in the box on the program settings tab, I notice just about everything is set to integrated, even stuff like vlc player. So the question that springs to mind is what is nvidia actually used for, if not even games and videos. What is the purpose of having a high spec dedicated graphics card.

 

Games running with Integrated Graphics Card instead of Dedicated one

I appreciate your help, but no matter what I try, the game still runs with the Intel video card (when I try to get best settings it's still on low). I attached a pic with the Intel overriding the settings.

Nothing to be done it seems.