problem with two different GPUs windows 10

[nitrochilled]

I have two questions.

1. I am having a problem with running two different NVIDIA GPUs with Windows 10. This seems to be a very common problem from the research I have done already. Everything worked fine in 7 and 8.1. Immediately after upgrading to 10 I lost the use of my second card. It shows it with a warning symbol in device manager but is not listed in the NVIDIA control panel. If anybody has figured this out and is willing to share that would be awesome! otherwise the question is this, when will windows 10 support two different dedicated GPUs? Or is this NVIDIAs problem?

I have found a possible problem, Intel display adapter causes the second card to become inactive. which leads to my second question

2. how can I disable the Intel display adapter. I can't seem to find the display adapter listed anywhere in windows 10. not in the device manager or installed software. nothing anywhere.



My computer specs are as follows:

Gigabyte z170 G1 Gaming motherboard

16GB g.Skill DDR4 3200MHz RAM

Intel 6600k i5 quad core processor (because i got tired of waiting for the 6700)

NVIDIA Windforce GTX760 4GB DDR5 (primary for 3 monitors)

NVIDIA Geforce GTX460 (secondary for only 1 monitor)

Crucial 250GB M.2 PCIe SSD

WB Black 1TB 7200 HDD

Thermaltake full motherboard liquid cooling.

Corsair RM1000i 1000 Watt power supply



OS:

Windows 10 pro 64bit

I had 4 monitors until i upgraded. now i only can use 3



On a side note. while i was messing around with the drivers doing installs and uninstalls with the GPUs at one point my 4th monitor running off of the second card was the only one working however device manager listed only the first card installed.



also when i try to install the driver software for the 460 it automatically only installs it for the 970.

 

[Zyb3r]

Hello

Question 1:
As far as I know using 2 different cards in your machine is never a good idea and generally cause problems. I am assuming you have tried the latest drivers from Nvidia for Windows 10? I am a bit skimpy on the subject so will be moving on to question 2.

Question 2:
You can disable your dedicated graphics card in your motherboards BIOS. You can't disable it from within Windows itself.

I hope my answer to question 2 helps solve your first question as well.

Hope this helps

 

[Alifton]

It's a windows 10 issue after the upgrade to WDDM 2.0. Windows 10 no longer supports loading both WDDM 2.0 and WDDM 1.x drivers simultaneously. It was a push for efficiency which will likely pay off in the long run but is a real source of grief for many users that were using 2 different types of GPU's just fine with Windows 7 & 8 but lost that ability in Windows 10.

Here's a couple articles that help explain the change and why it no longer works if you'd like a more detailed explanation of the reason for the problem you've encountered. I myself had exactly the same issue and tried many workarounds but Windows 10 is very picky now about how it handles GPU's and will likely remain that way in the future.


===============
Articles on this Subject :
===============

https://msdn.microsoft.com/en-us/library/windows/hardware/dn932166(v=vs.85).aspx

https://forums.geforce.com/default/topic/860421/windows-10-two-non-matching-graphics-cards/

http://www.tomshardware.com/answers/id-3028353/recognising-gpus-sli-difficulties.html