Opencore Black screen on HDMI once the installer starts

[xRhino06]

Hi, my laptop screen is broken and for this reason I use an external one connected via HDMI port, the problem is that once the macOS installer starts the screen turns off. How can I solve it?

 

[Feartech]

Hi, my laptop screen is broken and for this reason I use an external one connected via HDMI port, the problem is that once the macOS installer starts the screen turns off. How can I solve it?

little typo in your boot argument, should be:
igfxonln=1

 

[xRhino06]

little typo in your boot argument, should be:
igfxonln=1

The problem remains.

 

[Feartech]

The problem remains.

is the nvidia routed through the hdmi port? verify this in windows if you are not sure

 

[xRhino06]

is the nvidia routed through the hdmi port? verify this in windows if you are not sure

No

 

[xRhino06]

Before the external screen turns off the Lilu and Whatevergreen kexts generate these errors:

 

[Feartech]

Before the external screen turns off the Lilu and Whatevergreen kexts generate these errors:

zip and upload your EFI

 

[xRhino06]

zip and upload your EFI

 

[Feartech]

what is the make and model of your wifi card?

 

[xRhino06]

what is the make and model of your wifi card?

Broadcom BCM943225HM