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Solved > Help! Updated to Catalina 10.15.5 and stuck on black screen

Joined
Apr 27, 2017
Messages
14
Motherboard
Gigabyte Z170X Gaming
CPU
i7 6700k Skylake
Graphics
XFX Radeon VII
Mac
iMac
I've just upgraded to Catalina 10.15.5 and I am stuck on a black screen - no apple logo at startup. It's just black.

I've also created a USB startup disk for Catalina using my macbookpro and following the guides here but it won't boot from that either.

Here is a pic of what I get when I try to boot in verbose mode from the clover boot screen:

IMG_2189.JPG


Any and all help is very much appreciated!

My build is:
Gigabyte Z170x Ultra Gaming
32gb DDR4 RAM
Intel i7 6700k Skylake
XFX Radeon VII GPU
 
Last edited:

P1LGRIM

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Messages
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Motherboard
Lenovo ThinkStation p300 ⌘
CPU
i7-4790K
Graphics
HD 4600
Mac
MacBook Pro, Mac mini
Classic Mac
Power Mac
Mobile Phone
iOS
Can be incorrect BIOS settings.
RAM slots.
Incorrect or missing memory fix driver.
 

P1LGRIM

Moderator
Joined
Mar 2, 2012
Messages
23,379
Motherboard
Lenovo ThinkStation p300 ⌘
CPU
i7-4790K
Graphics
HD 4600
Mac
MacBook Pro, Mac mini
Classic Mac
Power Mac
Mobile Phone
iOS
How can I check/eliminate potential issues with RAM slots or missing/incorrect memory fix driver?
The most likely cause is the Clover memory fix driver.
Have a look, try a different one.

Try reducing memory to just one DIMM and see if it makes any difference.
 
Joined
Apr 27, 2017
Messages
14
Motherboard
Gigabyte Z170X Gaming
CPU
i7 6700k Skylake
Graphics
XFX Radeon VII
Mac
iMac
Clover had installed AptioMemoryFix.efi, so I tried the most recent version of that I could find (v27) and I have now tried OSXAptioFixDrv.efi; OSXAptioFix3Drv.efi and OSXAptioFix2Drv-64.efi and none of them work. For all of these drivers, as soon as I select the USB in the Clover Boot Manager menu and hit return to boot the screen goes black and stays that way.

Any other ideas?
 

P1LGRIM

Moderator
Joined
Mar 2, 2012
Messages
23,379
Motherboard
Lenovo ThinkStation p300 ⌘
CPU
i7-4790K
Graphics
HD 4600
Mac
MacBook Pro, Mac mini
Classic Mac
Power Mac
Mobile Phone
iOS
the screen goes black and stays that way.
The graphics may be working but on a different port than the one that you have connected to the monitor.
 
Joined
Apr 27, 2017
Messages
14
Motherboard
Gigabyte Z170X Gaming
CPU
i7 6700k Skylake
Graphics
XFX Radeon VII
Mac
iMac
The monitors are connected to the first 2 display ports on the gpu. Bios shows up on the monitor connected to the first DisplayPort, nothing shows on the second monitor. I have the gfx on the motherboard turned off in bios. Also, I should mention that the computer is not trying to boot, after I select the usb boot drive on the clover boot manager screen, the cpu seems to spool up and then all the fans go back to idle and remains that way with a black screen.
Should I remove the GPU, turn on gfx on the motherboard and try to get it to boot without the gpu?

thanks again for your help!
 
Joined
Apr 27, 2017
Messages
14
Motherboard
Gigabyte Z170X Gaming
CPU
i7 6700k Skylake
Graphics
XFX Radeon VII
Mac
iMac
Still unable to boot from SSD or USB. Here is the config.plist i'm using. I have made sure that I am using the latest versions of lilu.kext, FakeSMC.kext and whatevergreen.kext. as well as the latest versions of all drivers. Any and all insight is greatly appreciated!
 

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Joined
Aug 19, 2017
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7
Motherboard
Gigabyte Z270X Gaming 5
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I5-7600K
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HD630
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I had the same issue. After several attempts I realize it was the signal to the monitor wasn't ok. My monitor ls LG with 3 inputs. I just change the inputs on screen and when I returned to the HDMI my hackintosh was plugged in... The installation was running: 45 minutes to finish. So try changing your HDMI ports on screen and see if it returns. Good luck.
 
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