Contribute
Register

Windows 10 Vega 56 OC DisplayPort not Working

Joined
Jul 23, 2012
Messages
249
Motherboard
TUF Z370-PLUS GAMING
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook, MacBook Air
Mobile Phone
iOS
Hi All

My current setup is:
Intel i5-9600k
Asus TUF Gaming Plus
MSI Vega 56 Overclocked

I have two displays connected.

1 via HDMI
1 via DisplayPort

When I boot the system I can see the ‘splash’ screen on the DP display.

When macOS boots into Mojave, the Apple and the login screen appears on the HDMI monitor initiating the primary display.

Both screens work with minimal setup.

However, Windows 10.

Upon boot I see the splash screen on the DP monitor and then I see the login screen on the HDMI screen and the DP monitor turns off. Power saving function. No picture.

I’ve been through as many BIOS settings as I can. Initial display etc. I can’t change it.

And ideas how to get two displays working on Windows 10?

What makes me laugh is Windows is supposed to support all kinds of setups but fails, yet macOS worked immediately.

Help greatly appreciated. Happy to try any ideas.
 
Last edited:

Going Bald

Moderator
Joined
Aug 14, 2010
Messages
22,593
Motherboard
GA-X58A-UD7 Rev.1 BIOS F7
CPU
Intel Xeon W3670
Graphics
RX580
Mac
iMac, MacBook Pro, Mac mini
Classic Mac
iMac
Boot Win10, right click on the screen, select settings or go to settings, display. Designate a primary and secondary screen, designate display resolution you want if different from default. Win10 should detect and default display the maximum resolution.
 

Going Bald

Moderator
Joined
Aug 14, 2010
Messages
22,593
Motherboard
GA-X58A-UD7 Rev.1 BIOS F7
CPU
Intel Xeon W3670
Graphics
RX580
Mac
iMac, MacBook Pro, Mac mini
Classic Mac
iMac
Thanks for the response.

Tried the above. DP monitor not detected when clicking detect.

All drivers are up to date. Running Adrenalin 2019 19.4.1.

Any other suggestions?
Do you have the latest versions of lilu and whatevergreen kexts installed?
 
Joined
Jul 23, 2012
Messages
249
Motherboard
TUF Z370-PLUS GAMING
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook, MacBook Air
Mobile Phone
iOS
Do you have the latest versions of lilu and whatevergreen kexts installed?
I do! Obviously I’m dual booting.

What do you suggest, remove them? Replace them with something else?

My Mac setup is perfect at the moment.

Isn’t there a way of disabling kexts upon boot by request?

An easy way to test would be to boot directly from the Windows drive through the BIOS.

Great idea. Will test as soon as possible and post back.
 

pastrychef

Moderator
Joined
May 29, 2013
Messages
11,166
Motherboard
Asus ROG Strix Z370-G Gaming (Wi-Fi AC)
CPU
i9-9900K OC'd @ 5.0GHz
Graphics
Radeon VII
Mac
MacBook, Mac Pro
Classic Mac
iBook, Power Mac, PowerBook
Mobile Phone
iOS
Have you tried changing CSM setting in BIOS?
 
Joined
Jul 23, 2012
Messages
249
Motherboard
TUF Z370-PLUS GAMING
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook, MacBook Air
Mobile Phone
iOS
Have you tried changing CSM setting in BIOS?
I’ve had a look and changed bits here and there.

I’ll post my options when I get chance. Maybe you can advise.

Thanks
 
Joined
Jul 23, 2012
Messages
249
Motherboard
TUF Z370-PLUS GAMING
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook, MacBook Air
Mobile Phone
iOS
Hi Guys

I've tried booting from the Windows directly using the Boot Override function in BIOS, but I'm still getting the same results.

Is it worth removing the kexts from the Clover EFI folder entirely?

I've uploaded pictures of BIOS settings that I think may be relevant:
  1. CSM settings found within the Boot Menu
  2. Some options related to PCI settings
  3. Graphics Configurations

404959
404960

404961


I hope you can advise!

BIOS guide here.
 

Going Bald

Moderator
Joined
Aug 14, 2010
Messages
22,593
Motherboard
GA-X58A-UD7 Rev.1 BIOS F7
CPU
Intel Xeon W3670
Graphics
RX580
Mac
iMac, MacBook Pro, Mac mini
Classic Mac
iMac
Just tried with only the DP plugged in. When I got to the login screen in Windows, the picture vanished.
If the DP port works in Mac OS but not in Win10, then this is a driver problem within Win10. It is not recognizing the display port for some reason. Try with a HDMI display and the DP display booting into Win10. Go to the hardware device settings screen and look specifically at the PCIe card - does it show all ports of the card as active?
 
Top