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raultaboraz

B365M + 2 monitors only works if I unplug + plug monitors + iGPU

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Hi,

I have a Sonoma working 99% Gigabyte B365M-DS3 with 2 external monitors (DVI + HDMI) with iGPU but I can only make it work if:

1) I start Hackintosh with DVI cable totally unplugged (it doesn't work if cable is plugged and screen is Turned off).
2) I see login screen with horizontal black stripes in HDMI monitor.
3) I plug the DVI monitor and everything starts blinking with black screens.
4) it finally works, full gfx acceleration with 2 monitors DVI + HDMI.

But it's impossible to work if the 2 monitors are plugged it from the beginning. I always need to make tricky things disconnecting and connecting the DVI and HDMI so macOS Sonoma can finally detects it.

I had similar issues with MOJAVE but its works well and there is no need for unplug cables.

I have tried -igfxvesa bootarg as well without no results...

Any ideas please?

Thank you

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Thank you very much for reply however after reading it I can’t find my glitched problems solution.

In deed my Intel 630 HD from i3 9100 CPU is working perfect including HDMI audio, but only after unplugging the wires!

Any suggestion would be much appreciated. I don’t know where to look for this specific problem. 

thanks a lot!

 

 

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Enable csm on bios with IGPU

Use igfxonln=1 and agdpmod=vit9696 bootargs

 

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igfxonln=1 and agdpmod=vit9696 did improve the behaviour, as the first monitor (DVI) is working directly, however I still need to unplug HDMI second monitor once... 

But I have found a small workaround, using HDMI splitter next to my hand, so I only need to click a button... it works.

Anyway super thanks for your help, I am going to donate for your help!

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