No second monitor

[uzdow]

Hello all, 

 

I would like to ask for your help. Ive successfully installed macOS Ventura. Already made bluetooth and my graphics work.

The only thing that lasted for me to have proper running Mac is connecting second monitor. 

This is strange behaviour because on boot, everything is displayed on "A" monitor, then when apple logo disappears and login screen comes out "A" monitor shutdown (no signal from cable HDMI/DP) and everything is displayed on "B" monitor. 

I would really grateful for every tip :) 

[MaLd0n]

Hardware?

[uzdow]

Here is my system report (file attached)

iMac Pro.zip

[jgiraltr]

Same here, ivy bridge efi gpu nvidia gtx 770 only one monitor.

thanks

jordi

[uzdow]

21 hours ago, uzdow said:

Here is my system report (file attached)

iMac Pro.zip 262.72 kB · 0 downloads

@MaLd0n

[jgiraltr]

Solved adding boot arg: dart=0

thanks

[uzdow]

Unfortunately not for me ? connected via displayport but same result ? 

[roberto rezende junior]

Em 05/10/2023 às 10:59, jgiraltr disse:

Resolvido adicionando arg de inicialização: dart=0

obrigado

Good evening, I'm new to this. Can you show a printout of where I have to put this information? I'm having the same problem and you seem to be the only one who can solve it.

[uzdow]

OpenCore Configurator > NVRAM section > bootargs