<< Solved >> Dell 7577: what framebuffer settings to enable both DP and HDMI output?

[B.A.C.H]

Dear fellow hackintoshers,

I have recently upgraded my laptop to Monterey using OpenCore as a bootloader. An issue I cannot currently get past is enabling both the HDMI and USB-C (display port) for video output.

If I use framebuffer type 59160000 or 59160009 only the DP port will work, while with the recommended 591B0000 I only get the HDMI output.

I have tried applying bus and connector patches for all types of framebuffers as per these guides:

Patching Connector Types | OpenCore Post-Install

Patching Bus IDs | OpenCore Post-Install

but to no avail.

I would be really grateful for any hint and/or instruction. Please let me know which files I would need to upload for proper troubleshooting and how I could verify that the busids and other parameters I am patching are being applied successfully (the entries in IORegistryExplorer display the connector type, but I don't know where to find any information about the busid or index).

Many thanks in advance to anyone willing to help!

 

[Feartech]

Dear fellow hackintoshers,

I have recently upgraded my laptop to Monterey using OpenCore as a bootloader. An issue I cannot currently get past is enabling both the HDMI and USB-C (display port) for video output.

If I use framebuffer type 59160000 or 59160009 only the DP port will work, while with the recommended 591B0000 I only get the HDMI output.

I have tried applying bus and connector patches for all types of framebuffers as per these guides:

Patching Connector Types | OpenCore Post-Install

Patching Bus IDs | OpenCore Post-Install

but to no avail.

I would be really grateful for any hint and/or instruction. Please let me know which files I would need to upload for proper troubleshooting and how I could verify that the busids and other parameters I am patching are being applied successfully (the entries in IORegistryExplorer display the connector type, but I don't know where to find any information about the busid or index).

Many thanks in advance to anyone willing to help!

your zipped EFI would be handy

 

[B.A.C.H]

your zipped EFI would be handy

Thank you for your reply. Here it is!

 

[B.A.C.H]

Thank you for your reply. Here it is!

As a side note: the device properties section now includes some framebuffer patches which I have copied from a similar config. With this setup I am only getting the Display Port out (despite the platform-id being 591B0000).

 

[Feartech]

As a side note: the device properties section now includes some framebuffer patches which I have copied from a similar config. With this setup I am only getting the Display Port out (despite the platform-id being 591B0000).

probably do not need:
device-id

should be set as data and not number:
framebuffer-con1-enable
framebuffer-patch-enable

framebuffer-con1-alldata entry should probably be:
01050A00 00080000 87010000

and:
framebuffer-con2-alldata:
03060A00 00040000 87010000

EDIT:
also you do not need these boot arguments:
agdpmod=vit9696 debug=0x100 keepsyms=1

 

[B.A.C.H]

probably do not need:
device-id

should be set as data and not number:
framebuffer-con1-enable
framebuffer-patch-enable

framebuffer-con1-alldata entry should probably be:
01050A00 00080000 87010000

and:
framebuffer-con2-alldata:
03060A00 00040000 87010000

EDIT:
also you do not need these boot arguments:
agdpmod=vit9696 debug=0x100 keepsyms=1

Thank you for your suggestions!
I have changed my config file accordingly, but I'm still only getting DP out on framebuffer 1:

If it helps as an additional information, I remember that with the framebuffer type set to 591B0000 the HDMI out appeared on framebuffer 2.

 

[Feartech]

Thank you for your suggestions!
I have changed my config file accordingly, but I'm still only getting DP out on framebuffer 1:

View attachment 560213


If it helps as an additional information, I remember that with the framebuffer type set to 591B0000 the HDMI out appeared on framebuffer 2.

may be best to read up on:
https://dortania.github.io/OpenCore...-laptop.plist/kaby-lake.html#deviceproperties
scroll down and click the "Explanation" drop down for more info

 

[B.A.C.H]

may be best to read up on:
https://dortania.github.io/OpenCore...-laptop.plist/kaby-lake.html#deviceproperties
scroll down and click the "Explanation" drop down for more info

Dear Feartech,
I have re-read the guide, as well as the Whatevergreen documentation, and tried to follow them to the best of my abilities. Here are my findings:
a platform-id of 59160000 will enable DP out on connector 1 by default. The properties of that output are 01050A00 00040000 87010000 and can be assigned to connector 2 when explicitly patched.

None of the suggested combinations of patches for either platform-id 59160000 or 591B0000 will enable HDMI out however. The only way to get it working is to set both the platform-id and the device-id to 591B0000 (00001B59 and 1B590000 respectively) and to add the boot arg agdpmod=vit9696. In that case the DP out will stop working and on framebuffer 2 (connector 2) i get the following data from IORegistryExplorer:

now comes the puzzling part: I tried to patch con1 to 01050A00 00040000 87010000 to get DP out working again, but, unfortunately, while that did work, I no longer had any HDMI out.

I would like to extract the relevant data of the HDMI output from my IORegistryExplorer screenshot and format it into something framebuffer-con2-alldata can understand.
How would I go about doing such a thing? I see that the port-number value is 7. Does this correspond to the bus-id from Whatevergreen's guide?


Thank you again

 

[B.A.C.H]

The problem is finally solved!

To future me and anybody with a similar setup:
I had to set platform-id and device-id to 591B0000 and, most importantly, to set agdpmod=vit9696 as a boot argument to enable HDMI out.
Thereafter I applied the patch that I found worked with DP out while trying out various combinations:01050A00 00040000 87010000.

Now both outputs are working. I have no idea, whether they can transmit audio, as I don't have a monitor or device that would accept it to try it out, but I am really relieved as is.

Many thanks to Feartech for pointing me in the right direction!