While loading Boot screen no video output

[thomas126]

Hi mate.
Thanks for sharing. I’m using the same setup with an i3 10100. while booting into Mac OS. I see the Boot Screen. Then suddenly while seeing progress the video output gets disabled (black screen). I’m running HDMI. DP doesn’t output at all. Any ideas?

thanks for any help!

best regards,
Tom

[ruibeard]

Hi, I've just updated my config.plist with my most recent changes done to it. You could try again with this most recent changes.

You can also have a look in the WhateverGreen documentation just to see what's necessary for the graphics. normally is that and lilu kext. Which my folder already have. https://github.com/acidanthera/WhateverGreen/blob/master/Manual/FAQ.IntelHD.en.md#intel-uhd-graphics-610-655-coffee-lake-and-comet-lake-processors

During my installation I always had output from the DP and HDMI even during installation.

You could try to just copy paste my folder without any modification and see if that changes anything.

Other thing you can try is using the debug version of opencore (instead of release one) which creates a log file inside usbdrive with everything that open core does. There should be some clue about what's happening. for example missing kext or something like that.

You could try to join the official opencore channel https://discord.gg/u8V7N5C , maybe there try to post the log and see if anyone can help you. Tbh my knowledge is limited.

Anyway let me know if I can help you with something

[thomas126]

Okay I’ll give it a try. Did you change anything within Bios settings?

[ruibeard]

Hi, I've just followed the setting on opencore webpage
https://dortania.github.io/OpenCore-Install-Guide/config.plist/comet-lake.html#intel-bios-settings

[ffleandro]

Thanks for this project.
I'm successfully using this configuration with Intel 10900K and original Intel AC1368 Wifi Card 2.4GHz, 5GHz and Bluetooth, using the AirportItlwn Kext driver for Big Sur.

However I can't get HDMI to work.
Displayport works fine and both work during boot logs, but when OS kicks in HDMI gets disabled. Display Port always works fine.

Any hints?

[ruibeard]

Hi, I'm using de integrated graphics card, is that the case with you?
The values on the section PciRoot(0x0)/Pci(0x2,0x0) of the config.plist where created from https://github.com/acidanthera/WhateverGreen/blob/master/Manual/FAQ.IntelHD.en.md#intel-uhd-graphics-610-655-coffee-lake-and-comet-lake-processors
Check if you the framebuffer-con[#number]-type have the value 00080000 (means hdmi)
I'm only using DP for now, but I know my hdmi works with those settings. Not sure how can help.
Have a look on that link, it might help :)

[ffleandro]

@ruibeard I managed to fix my issue, at the end of the day it was some misconfiguration on the BIOS.

Now I'm trying to use DP and HDMI at the same time, does your configuration work like this?

[ruibeard]

Hi, I don't use a hackintosh anymore. At the time I was only using the DP port and never really used the HDMI. As far as I remember the HDMI port worked, but didn't played well with 4K monitors. Probably it was a misconfiguration somewhere. But I bet the configuration I have is already old. There should be newer versions of opencore. Anyway you can always try this configuration as it is :)

…

On Tue, 19 Apr 2022 at 20:31, ffleandro ***@***.***> wrote: @ruibeard <https://github.com/ruibeard> I managed to fix my issue, at the end of the day it was some misconfiguration on the BIOS. Now I'm trying to use DP and HDMI at the same time, does your configuration work like this? — Reply to this email directly, view it on GitHub <#4 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AB5H4ANQUZJOTFDKGPHD52DVF4CXXANCNFSM4XU7W3NQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

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