macOS Sequoia RX 6600 XT passthrough - boot logo black screen

[jakoberpf]

Hello peoples,

maybe I am in the wrong forum but I am frustrating about using a RX 6600 XT on a MacOS Sequoia. I can passthrough the GPU and I can start the boot of macOS where I will see the gray Apple logo boot screen but right after the loading bar processes the screen turns black and the VM hangs. I am using https://github.com/luchina-gabriel/OSX-PROXMOX to setup the VM and tried different variations of `-v debug=0x100 keepsyms=1 agdpmod=pikera` as args to make the GPU work. May config look

```yaml
# Hackintosh VM - Sequoia
agent: 1
args: -device isa-applesmc,osk="ourhardworkbythesewordsguardedpleasedontsteal(c)AppleComputerInc" -smbios type=2 -device qemu-xhci -device usb-kbd -device usb-tablet -global nec-usb-xhci.msi=off -cpu Cascadelake-Server,vendor=GenuineIntel,+invtsc,-pcid,-hle,-rtm,-avx512f,-avx512dq,-avx512cd,-avx512bw,-avx512vl,-avx512vnni,kvm=on,vmware-cpuid-freq=on -global ICH9-LPC.acpi-pci-hotplug-with-bridge-support=off
autostart: 0
balloon: 0
bios: ovmf
boot: order=ide0;virtio0
cores: 8
efidisk0: vms:vm-103-disk-0,size=1M
ide0: local:iso/opencore-osx-proxmox-vm.iso,cache=unsafe,size=80M
ide2: local:iso/recovery-sequoia.iso,cache=unsafe,size=1450M
machine: q35
memory: 16256
meta: creation-qemu=9.0.2,ctime=1737221222
name: macOS-Workspace
net0: vmxnet3=BC:24:112:C1:B7,bridge=vmbr0
numa: 0
onboot: 0
ostype: other
scsihw: virtio-scsi-pci
smbios1: uuid=0463661f-f293-47b9-a732-73a10e0c4d99
sockets: 1
tablet: 1
vga: vmware
virtio0: vms:vm-103-disk-1,cache=none,discard=on,size=256G
vmgenid: 7ae3340e-d593-4ea6-beb4-00683689f0c3
hostpci0: 0000:43:00,romfile=RX6600XT.rom
hostpci1: 0000:0c:00.3
```

but I have no idea anymore whats the issue.

 

[paulcrouch]

Hello, did you ever get this to work? I have an RX6600 and I can get it to boot without the passthrough, but not with it! Nightmare. Any help appreciated.

 

[jakoberpf]

@paulcrouch Hey, unfortunantly I was not able to get this to work, but I also stoppped trying a couple of weeks ago :-/

 

[paulcrouch]

Appreciate you replying @jakoberpf - shame I too feel out of time. If I try again and get it to work, I'll let you know.

 

[MarkusKo]

macos most likely has no driver for the RX6600, the install script looks like it uses vanilla macos install images from apple?

you could try to get one of those shady hackintosh install images with additional hardware drivers ...

 

[paulcrouch]

Thank you - I can get MacOs to run, just not using the GPU.

 

[Ciroloco]

Im using the same script , but i can't make it run, i have Proxmox 8.4.1 , my cpu is I9 12900K and 64GB, the vm starts , boots on a white screen with the apple logo an stays there, nothing happens.
Any thoughts ?

 

[mikeyo]

I just tried on proxmox 9 with rx6600 and Tahoe. Same issue, boots ok without GPU but stuck on apple logo with GPU. Rebar also disabled in bios. Anyone got it working?