Disabling iGPU in windows 10

[ahujet]

Have any of you successfully disabled iGPU in UEFI using windows 10 without getting black screen on boot as well as dual displays when running only one display? It is better described in this video

My setup is i5-4670k and r9 280x.

 

[ahujet]

To add the black screen happens untill you boot into windows, so you can't see anything in UEFI and stuff (because only once it boots in windows it selects the right display, I think).

 

[INSTG8R]

Never enabled mine? Didn't realise it was actually an issue.

 

[silentbogo]

That thing in the video, is a misconfiguration in BIOS.
If you plan to use multiple monitors on both adapters, you should set PCI-e as primary display adapter, otherwise iGPU will initialize first.
Or the easiest way - use multiple monitors on your dGPU.
If you use only one display - then you should disable the multi-monitor feature in BIOS altogether.

There is a more frustrating bug with AMD cards on Linux (including iGPUs), where a display always initializes on HDMI output, even if there is nothing connected there.
That one I still don't know how to fix.

 

[ahujet]

That thing in the video, is a misconfiguration in BIOS.
If you plan to use multiple monitors on both adapters, you should set PCI-e as primary display adapter, otherwise iGPU will initialize first.
Or the easiest way - use multiple monitors on your dGPU.
If you use only one display - then you should disable the multi-monitor feature in BIOS altogether.

There is a more frustrating bug with AMD cards on Linux (including iGPUs), where a display always initializes on HDMI output, even if there is nothing connected there.
That one I still don't know how to fix.

there is an option to disable multiple display feature? How is it called? Don't recall seeing one while I was browsing bios, that might fix this issue.

 

[silentbogo]

I think it is called Intel Multi Display.
Basically, if it is disabled, then your iGPU is completely disabled (will not even show in device manager).
If you enable it - then your iGPU becomes your primary adapter, and dGPU - secondary. Because of that your monitors will start to initialize from iGPU to dGPU too.
I just tried it on my PC, and it works as it should even without disabling multi-monitor feature, e.g. if I have something plugged into my iGPU video output, then I have that as my primary display, and if I disconnect it - my other display(connected to dGPU) becomes primary.

 

[ahujet]

I think it is called Intel Multi Display.
Basically, if it is disabled, then your iGPU is completely disabled (will not even show in device manager).
If you enable it - then your iGPU becomes your primary adapter, and dGPU - secondary. Because of that your monitors will start to initialize from iGPU to dGPU too.
I just tried it on my PC, and it works as it should even without disabling multi-monitor feature, e.g. if I have something plugged into my iGPU video output, then I have that as my primary display, and if I disconnect it - my other display(connected to dGPU) becomes primary.

Ah, had that multi display option disabled. Currently installing clean windows maybe that was the problem. What version of windows 10 are you on btw?

 

[Shou Miko]

Well not even all motherboards allow u to enable ur igpu when u have a PCI-E Graphic card inserted.

I am wondering if the R9 280X is running a UEFI or CSM/Legacy Bios?

 

[ahujet]

Well not even all motherboards allow u to enable ur igpu when u have a PCI-E Graphic card inserted.

I am wondering if the R9 280X is running a UEFI or CSM/Legacy Bios?

I don't want it enabled, I want it disabled. On that second part about GPU I don't really understand what you mean, I can check if you can tell me how.

 

[INSTG8R]

I don't want it enabled, I want it disabled. On that second part about GPU I don't really understand what you mean, I can check if you can tell me how.

Well GPU-Z will tell you if you are have/using a EUFI BIOS

Edit; Just adding a quick pic to show EUFI just in case

 

[ahujet]

I guess it doesn't use UEFI. Does it matter in this case?

 

[INSTG8R]

I guess it doesn't use UEFI. Does it matter in this case? View attachment 78728

Well it just means you will need to to use CSM and can't use Fastboot/Secure Boot. Not a really big deal IMO. I use CSM and I am still on my desktop in 15 seconds.

 

[ahujet]

Well it just means you will need to to use CSM and can't use Fastboot/Secure Boot. Not a really big deal IMO. I use CSM and I am still on my desktop in 15 seconds.

Yea I boot fast too, but still it doesn't solve the problem

 

[INSTG8R]

Yea I boot fast too, but still it doesn't solve the problem

Just find the right spot in the BIOS and disable the iGPU. No need for fresh Windows or anything like that. Disable it and be done with it.

Edit: Alternatively you can set your GFX Card as priority. Should be under PCH Configuration and at least in my BIOS my iGPU is under System Agent Configuration.

 

[ahujet]

Just find the right spot in the BIOS and disable the iGPU. No need for fresh Windows or anything like that. Disable it and be done with it.

When I disable it, shit happens that I wrote in my original post/in video, that's the thing.

 

[Jetster]

Mine works both ways so it doesn't matter if its on auto or pci e. Maybe try a non UEFI install

 

[slozomby]

make sure you bios has PEG or PCIE for the primary display.
disable multidisplay.

 

[Shou Miko]

What mobo r u using?

in ur system specs u have AMD setup and u write under the video link i5-4670k,

I have a Asus Z170I Pro Gaming myself this is one of my first boards that allows me to use PCI-E and IGPU together my old i5-6600k with a Asus Maximus Gene ROG board didn't allow me to use IGPU while I was using a dedicated PCI-E gpu.