[GUIDE] General Framebuffer Patching Guide (HDMI Black Screen Problem)

[deeveedee]

Thanks for answering,
I have followed the instructions in topic 1 and your link sent I have read and applied, do you have any other suggestions for me?

No other suggestions. I started looking at your config.plist and don't see any resemblance between it and the instructions. If you posted your actual config.plist, then I'd suggest starting over and carefully reading the links I posted.

 

[tmtung144]

you can fill out your hardware profile properly

https://www.tonymacx86.com/account/account-details

I have updated my hardware information

No other suggestions. I started looking at your config.plist and don't see any resemblance between it and the instructions. If you posted your actual config.plist, then I'd suggest starting over and carefully reading the links I posted.

I have noted that the EFI I attached is after doing the "Preflight Checklist"
If you need config.plist after patch then I will attach below

 

[deeveedee]

I have updated my hardware information


I have noted that the EFI I attached is after doing the "Preflight Checklist"
If you need config.plist after patch then I will attach below

Still read this, since you are renaming GFX0. Your interfaces (DVI and VGA) are going to be a challenge but not impossible. Further complicated by an adapter, but still not impossible. I think your board is just going to require tedious trial and error as I have done here. Make sure you can remotely login to your rig and start experimenting with frame buffers.

 

[deeveedee]

I experienced a "black screen" issue with my UHD 630 graphics after temporarily connecting different displays. The new, temporary displays had a different screen resolution from the original displays. The black screen "fix" was to change the CLOVER Screen Resolution to match the native display resolution of the new, temporary displays.

See full explanation here.

 

[Jh97uk]

I have an ASUS Strix B360 motherboard, I'm trying to get my display working through HDMI and not Display Port off of the onboard iGPU (rather than the GTX 970 which I'm having to use to get a display out), I've ticked apply changes and used the inbuilt patch for the B360i on Hackintool, saved my config, but I'm not getting anything when I boot up, just a black screen. Only my GTX 970 will output video.

My board only has Display Port and HDMI (but does have USB C, so maybe an additional HDMI there? That one doesn't work either).

I used my brothers DP display earlier, and it output fine, but I couldn't even get it outputting to HDMI using the manual configs.

I'm on OSX 10.15.

Any ideas?

 

[Feartech]

I have an ASUS Strix B360 motherboard, I'm trying to get my display working through HDMI and not Display Port off of the onboard iGPU (rather than the GTX 970 which I'm having to use to get a display out), I've ticked apply changes and used the inbuilt patch for the B360i on Hackintool, saved my config, but I'm not getting anything when I boot up, just a black screen. Only my GTX 970 will output video.

My board only has Display Port and HDMI (but does have USB C, so maybe an additional HDMI there? That one doesn't work either).

I used my brothers DP display earlier, and it output fine, but I couldn't even get it outputting to HDMI using the manual configs.


Any ideas?

you should update your hardware profile with the actual graphics you are using for macOS

 

[yrambler2001]

Hi everyone!
I have i5-10600 & iGPU & AsRock B460m Pro4, OC 0.6.0, Catalina 10.15.6
My EFI/screenshots/config https://github.com/yrambler2001/Hackintosh-Intel-i5-10600-iGPU-AsRock-B460M-Pro4
The BIOS settings I use https://github.com/Old-Black-Dog/Ha...SRockz490mitxac_bios_ 2020-07-17 08.28.20.pdf
I use dual 1920x1080 monitors and the only issue I have is after start the second monitor remains black.
The main monitor use HDMI port, the second monitor uses HDMI-HDMI cable, DP to HDMI adapter which is connected to the DP motherboard port.

Spoiler: black second monitor

After about 1 minute the second monitor started to show the image but both of the monitors show image with artefacts

Spoiler: artefacts

If I open mac os settings and change that second monitor display resolution to any other and then revert back to 1080p then both monitors have good image all the day until reboot (also there is one little issue that about after 4 hours the random monitor turns black for 3 seconds and then remains good).
Also if I change that second monitor display resolution to 1600x900 then image will be good (without artefacts or black screen) on both monitors even if I reboot the pc.
I tried switching hdmi/dp framebuffer on second monitor but there is no effect.

Does anyone have an idea how can I fix the issue?
Thanks!

 

[deeveedee]

Hi everyone!
I have i5-10600 & iGPU & AsRock B460m Pro4, OC 0.6.0, Catalina 10.15.6

Does anyone have an idea how can I fix the issue?
Thanks!

Quickly scanned your EFI. Forgive naive observations, since I'm not familiar with your board. Also, I use CLOVER and not OC, so I may have missed some things in your config.plist. My observations are as follows:

1. Read this. Remove the kexts that you're not supposed to install with WhateverGreen.
2. Your con0-type is 0x01 (Dummy Port). Are you not using con0? I found debugging easier when I explicitly set the properties of all ports (even those that I wasn't changing from their defaults). (e.g. include framebuffer-con2-type so that we're not assuming a default value that may or may not be accurate)
3. As per #2, I can't tell your con2-type. I found that I needed to specify a port type that matched my adapter (i.e. when I used a DP->DVI adapter on a DP port, I needed to specify port type DVI and not port type DP). Since you're using a DP-HDMI adapter, you may need to specify port type HDMI on your DP port.
4. Do you need to explicitly set framebuffer-stolenmem?
5. I had problems with IntelMausiEthernet.kext after Catalina 10.15.4. I recommend using IntelMausi.kext here.
6. You may need these boot args for WhateverGreen (you may have these - I didn't know where to find them in your OC config.plist)
7. You may need to experiment with different frame buffers as I have done here to find the ones that work for you

 

[yrambler2001]

My observations are as follows

Thanks for quick response!
1. I've removed FakePCIID.kext & FakePCIID_Intel_HDMI_Audio.kext, but the issue is the same, I use FakePCIID_Intel_HDMI_Audio to fix ALC1200 audio, without the kext, OS show "no audio devices"
2. Yes, I do not use con0, I use con1 and con2.

Spoiler: hackintool

3. I've set HDMI to con1 and con2, still no changes.
4. No, I don't, however after removing this line, no changes happen
5. I've had problems with ethernet so after hackintosh install I found latest working version from your kext link support page

Support
Please refer to the driver's thread on insanelymac.com
https://www.insanelymac.com/forum/topic/304235-intelmausiethernetkext-for-intel-onboard-lan/

6. I had igfxonln=1. After adding darkwake=3, igfxagdc=0 still no changes. These are on the 745 line.
7. Looks like this is the only way. Will try to experiment when I find some free time.
I've committed the changes. Maybe someone have any other ideas that may help?

 

[deeveedee]

Thanks for quick response!

7. Looks like this is the only way. Will try to experiment when I find some free time.
I've committed the changes. Maybe someone have any other ideas that may help?

I think framebuffer and conX-type experimentation is necessary. You may want to try swapping video cables just to confirm that they are not causing any problems.

@yrambler2001 I reviewed your original config.plist and noticed a couple of other things that you should check:

1. Why are you spoofing device-id 0x3e9b? According to this, the native device-id for your CPU is 0x9BC8, which according to this is natively supported. You shouldn't need to spoof a device-id, so you may be able to remove device-id from your config.plist (allowing it to assume its default value) or you can explicitly set device-id = 0x9bc8 (reverse byte order: 0xc89b0000).
2. According to the first post in this thread, HDMI bus IDs are "very restrictive" and may vary by motherboard. Maybe you need to experiment with Bus IDs 0x01 and 0x02 as well?
3. When you experiment with frame buffers, be sure to experiment with the CometLake frame buffers that have 3 connectors in this document:
   

   Framebuffer	Type	Connectors	TOTAL STOLEN Memory
   0x3EA50009	mobile	3	58 MB
   0x3E920009	mobile	3	58 MB
   0x3E9B0009	mobile	3	58 MB
   0x3EA50000	mobile	3	58 MB
   0x3E920000	mobile	3	58 MB
   0x3E000000	mobile	3	58 MB
   0x3E9B0000	mobile	3	58 MB
   0x3EA50004	mobile	3	58 MB
   0x3EA50005	mobile	3	58 MB
   0x3EA60005	mobile	3	58 MB
   0x3E9B0007	desktop	3	58 MB