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Black Screen & Clover update

Joined
Dec 19, 2015
Messages
24
Motherboard
GA-Z97X-Gaming GT
CPU
i7-4790K
Graphics
RX 480
Mac
MacBook Pro
Mobile Phone
iOS
Hi guys,

I've been searching for 2 days how to fix my Catalina installation, tried many solutions... But it's still broken...
I've installed a clean Mojave on my build, restored my time machine backup and checked, everything was working fine.

I tried to upgrade Clover from 4910 to 5200 and I was unable to boot Mojave. So I copied the one from the bootable USB key.

After that, I upraded to Catalina via the AppStore and I think I had no problem during the install.

But now, like many others, I am stuck with a black screen after boot.

I tried to boot with the latest versions of WEG and Lilu, in L/E directory and/or in EFI/CLOVER/kexts/other but still black screen.
I rechecked my BIOS setup many times...

I have 2 monitors plugged in HDMI and DP. Dual boot with Windows. CGU is a MSI RX 480.
 

Ice

Joined
Sep 20, 2010
Messages
29
Motherboard
Gigabyte GA-Z87X-UD5H
CPU
i7-4770K
Graphics
RX 580
Mac
MacBook Air, MacBook Pro, Mac mini
Classic Mac
PowerBook
Mobile Phone
iOS
Have you tried booting with agdpmod=pikera as mentioned here?
 

Ice

Joined
Sep 20, 2010
Messages
29
Motherboard
Gigabyte GA-Z87X-UD5H
CPU
i7-4770K
Graphics
RX 580
Mac
MacBook Air, MacBook Pro, Mac mini
Classic Mac
PowerBook
Mobile Phone
iOS
I am really not an expert on this. I can only tell you what I did.

Btw, do you still have Clover 4910 installed? Some Posts here suggest that you need to upgrade to a 5x version to be able to boot Catalina.

When I was experiencing issues with my graphics card booting v5100 (no matter what drivers/settings I used during install), I tried v4961 from the Downloads section and it worked for me.
What I did was update Clover on the Unibeast USB key (just pkg install and change destination during install) to v4961.
With that key I was able to boot and noticed no graphics issues anymore. Since the system would not let me install v4961 to disk directly under Catalina, I used Clover configurator to Clone the EFI partition from the USB key to disk.
After booting this version from disk I did a clover update to v5100 with just the default settings and my system now boots v5100 fine with no graphics issues anymore.

As I said, I am really not an expert and I still don't really understand why it worked this way, but not with a regular Clover update, but it did. :mrgreen:
 

Ice

Joined
Sep 20, 2010
Messages
29
Motherboard
Gigabyte GA-Z87X-UD5H
CPU
i7-4770K
Graphics
RX 580
Mac
MacBook Air, MacBook Pro, Mac mini
Classic Mac
PowerBook
Mobile Phone
iOS
Also make sure you have your kexts (WEG, Lilu, AppleALC) only in one place, either /Library Extensions OR EFI/CLOVER/kexts/other.
 
Joined
Dec 19, 2015
Messages
24
Motherboard
GA-Z97X-Gaming GT
CPU
i7-4790K
Graphics
RX 480
Mac
MacBook Pro
Mobile Phone
iOS
Hey Ice,

I am so sorry to tell you (and to admit) that I gave up...
I went back on a Mojave install which I know is working.
But I keep all your advices to when I decide to upgrade in the future

Thank you for the time you spent on my case ^^.

Happy new year
 
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