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Solved > Radeon GPU, have to unplug HDMI cable post-boot? New in 10.14.5

Joined
Apr 8, 2019
Messages
4
Motherboard
Gigabyte Z390 M Gaming
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook Air
Mobile Phone
iOS
Per subject I have an AMD Radeon Vega 56 that started going black screen after it gets through the boot process (verbose). I tried all kinds of things but the solution was... unplugging the HDMI cable and plugging back in. Presto, login screen shows up.

Not the worst thing but obviously pretting annoying to reseat a cable on every restart.

DisplayPort ports on my GPU not working at all and I don't know if it was working before, so can't test that way.

I've updated Clover, updated various kexts (Lilu, WhateverGreen, etc) and tried out the `RadeonDeinit` graphics setting but no dice

Any ideas?
 

pastrychef

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Motherboard
Asus ROG Strix Z370-G Gaming (Wi-Fi AC)
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i9-9900K OC'd @ 5.0GHz
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Radeon VII
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Per subject I have an AMD Radeon Vega 56 that started going black screen after it gets through the boot process (verbose). I tried all kinds of things but the solution was... unplugging the HDMI cable and plugging back in. Presto, login screen shows up.

Not the worst thing but obviously pretting annoying to reseat a cable on every restart.

DisplayPort ports on my GPU not working at all and I don't know if it was working before, so can't test that way.

I've updated Clover, updated various kexts (Lilu, WhateverGreen, etc) and tried out the `RadeonDeinit` graphics setting but no dice

Any ideas?
What model of Vega 56 do you have? Is the port layout the same as a reference card?

Usually, the ADGP fix that's incorporated in to WhateverGreen fixes cards with non-reference port layouts... However, oddly enough, there was one user who reported that he needed to add the "agdpmod=ignore" boot argument to get video...
 
Joined
Apr 8, 2019
Messages
4
Motherboard
Gigabyte Z390 M Gaming
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook Air
Mobile Phone
iOS

pastrychef

Moderator
Joined
May 29, 2013
Messages
9,619
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
PowerColor Red Dragon: https://www.powercolor.com/product?id=1521537060

Same port layout as AMD reference card

I might try things like removing WhateverGreen next, since I'm not sure I even needed it in the first place. But it is extra annoying rebooting to try new kernel mods now :)
The ports are different from reference cards. It has 2x HDMI and 2x DisplayPort. Reference has 1x HDMI and 3x DisplayPort.

Try the latest Lilu and WhateverGreen installed in /EFI/CLOVER/kexts/Other/ and config.plist > System Parameters > Inject Kexts = Yes.
 
Joined
Apr 8, 2019
Messages
4
Motherboard
Gigabyte Z390 M Gaming
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook Air
Mobile Phone
iOS
Thanks, will do

Is there a difference between keeping kexts in `/EFI/CLOVER/kexts/Other` vs. `/Library/Extensions`? Load timing?
 

pastrychef

Moderator
Joined
May 29, 2013
Messages
9,619
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
Thanks, will do

Is there a difference between keeping kexts in `/EFI/CLOVER/kexts/Other` vs. `/Library/Extensions`? Load timing?
Yes, there's a difference. Lilu needs to load early and if it's in /Library/Extensions/ that may not happen. If you want to keep them in /Library/Extensions/ you can but should also use LiluFriend.
 
Joined
Apr 8, 2019
Messages
4
Motherboard
Gigabyte Z390 M Gaming
CPU
i5-9600K
Graphics
Vega 56
Mac
MacBook Air
Mobile Phone
iOS
That did the trick, thank you!
 
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