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szydl0

Disable one of two discrete GPUs via DSDT

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Hello Mald0n,

I want to use supported GPU in macOS next to RTX I'm using in Windows. However, with dual-GPU there is crash immediately after selection macOS from opencore. With single-GPU everything is working fine. I've tried to fix this by disabling RTX via methods from opencore manual, but none of them works for me. Could you help with DSDT? I've made two Send me packages with each card. I've donated you via PayPal and make that again if it's going to work :).Send me Mac-Pro_combined.7z 

Spec:

E5-1680v2
Asus P9X79-E WS (it has PLX chips to multiplicate PCIe lanes)
RTX 3090
GT710

The GT710 is going to be replaced eventually by Radeon WX4100, however with Radeon alone booting stucks with BIOS error code 97. If it is with another card (i.e. GT710+WX4100), then Radeon is booting and working fine (but this way I can not give you sendme package with Radeon).

Thanks!
 

Send me Mac-Pro_combined.7z

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save one ioreg. i need locate nvidia

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DSDT.aml.zip

u can remove ssdts

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It get past OC, but it stuck here:

spacer.png Console is displayed on RTX, the output on GT710 is not available.

EDIT: Ok, it is working, I have to only disconnect display from RTX during boot! :)

However, if I plug WX4100 instead GT710, then I still get the same error from OC that I was receiving with old DSDT:

spacer.png

 

Edited by szydl0
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update things. bootloader and kexts

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They are matching OC 0.7.8, but will try update to 0.7.9 :)

EDIT: Well, it's weird as f... Behavior is different each time and not consistent at all. Sometimes it hangs on OC, sometimes it boots to error with IOAPIC and rarely it boots to the desktop. All seems depending on previous state of boot, which boot option was selected last time, also if hardware was modified or which cable was connected.

I will do more testing and try to find some repeatable patterns.

Edited by szydl0
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