I have a macOS VM running Sonoma 14.6.1 with GPU passthrough (Radeon VII) on proxmox 8.2.
However, for some unknown reason (hopefully known sooner than later), ONLY the HDMI output works on the Radeon VII GPU when passed through to the macOS VM.
I've tried...
NOTE: when this same Radeon VII GPU is passed through to a Windows 10 VM, all 4 video outputs work (1x HDMI, & 3x DisplayPort). I can use one or multiple monitors with or without HDMI port in use and all DisplayPorts on the GPU generate output to my monitors when it's a Windows 10 VM that's using the GPU as passthru.
I've even tried other GPUs and sadly this behavior repeats itself. For example, I swapped in an AMD Radeon RX590 (replacing the Radeon VII, just for troubleshooting purposes). And again, the same confusing and disappointing results occur, meaning, ONLY the HDMI output will display anything, but the 3 DisplayPorts won't display anything. (NOTE: again all 4 video outputs work with GPU passthrough for windows guest with this RX590, just like they did for the Radeon VII).
The only thing that is suspect to me at this point, is the fact that macOS' "system information > PCI" has the GPU listed as a generic video device instead of device specific information like I would expect...
Yet "System Information > Graphics/Displays" lists specifics about the GPU (vendor make & model, etc)...
The following screenshot if from my Mac Pro 5,1 2012 (a physical macOS install, not a virtual machine) which shows the type of information I would expect to see in "System Information > PCI"...
Maybe what's shown, or not shown, in the "System Information" app is unrelated and has nothing to do with why I can't use the DisplayPorts on my AMD GPUs when passed through to a macOS VM. But whatever the reason, I have no idea at this point.
If any of ya'll have had this, or a similar issue before, and found a solution, please share.
Or if anyone out there has any suggestions on what I should try next, I would appreciate it. THANKS!
A few details about my Hackintosh VM setup:
Proxmox version:
macOS version: 14.6.1 (Sonoma)
VM qemu.conf
OpenCore config.plist file (I tried to past the entire contents of my config.plist but apparently it made the post longer than allowed. Can't find a way to link a file to include my config.plist)
However, for some unknown reason (hopefully known sooner than later), ONLY the HDMI output works on the Radeon VII GPU when passed through to the macOS VM.
I've tried...
- HDMI only (no DisplayPort in use):
- output to the connected monitor works as expected.
- HDMI with DisplayPort (dual monitors):
- ONLY HDMI shows any output. The monitor connected with DisplayPort does NOT display anything.
- DisplayPort only (no HDMI):
- ONLY the OpenCore boot picker screen is displayed. After that, when macOS is booting, I get the "bitten Apple" logo displayed for a few moments and then the screen goes blank. Once macOS is up and running I can ssh into it and even VNC into it. But nothing is displayed on the monitor when the DisplayPort is used on the GPU.
- Each DisplayPort individually or all together (no HDMI):
- No matter which DisplayPort on the GPU I cable up my monitor(s), I still get no output. Be it one monitor, two monitors, or three, if it's cabled up to one of DisplayPorts on the GPU it will not display any output.
NOTE: when this same Radeon VII GPU is passed through to a Windows 10 VM, all 4 video outputs work (1x HDMI, & 3x DisplayPort). I can use one or multiple monitors with or without HDMI port in use and all DisplayPorts on the GPU generate output to my monitors when it's a Windows 10 VM that's using the GPU as passthru.
I've even tried other GPUs and sadly this behavior repeats itself. For example, I swapped in an AMD Radeon RX590 (replacing the Radeon VII, just for troubleshooting purposes). And again, the same confusing and disappointing results occur, meaning, ONLY the HDMI output will display anything, but the 3 DisplayPorts won't display anything. (NOTE: again all 4 video outputs work with GPU passthrough for windows guest with this RX590, just like they did for the Radeon VII).
The only thing that is suspect to me at this point, is the fact that macOS' "system information > PCI" has the GPU listed as a generic video device instead of device specific information like I would expect...
- Radeon VII
- RX590
Yet "System Information > Graphics/Displays" lists specifics about the GPU (vendor make & model, etc)...
- Radeon VII
- RX590
The following screenshot if from my Mac Pro 5,1 2012 (a physical macOS install, not a virtual machine) which shows the type of information I would expect to see in "System Information > PCI"...
Maybe what's shown, or not shown, in the "System Information" app is unrelated and has nothing to do with why I can't use the DisplayPorts on my AMD GPUs when passed through to a macOS VM. But whatever the reason, I have no idea at this point.
If any of ya'll have had this, or a similar issue before, and found a solution, please share.
Or if anyone out there has any suggestions on what I should try next, I would appreciate it. THANKS!
A few details about my Hackintosh VM setup:
Proxmox version:
Code:
root@pve-cMP31-1010:~# uname -a
Linux pve-cMP31-1010 6.8.12-1-pve #1 SMP PREEMPT_DYNAMIC PMX 6.8.12-1 (2024-08-05T16:17Z) x86_64 GNU/LinuxmacOS version: 14.6.1 (Sonoma)
VM qemu.conf
Code:
root@pve-cMP31-1010:~# cat /etc/pve/qemu-server/1010.conf
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 -global ICH9-LPC.acpi-pci-hotplug-with-bridge-support=off -cpu host,vendor=GenuineIntel,+invtsc,+hypervisor,kvm=on,vmware-cpuid-freq=on
balloon: 0
bios: ovmf
boot: order=hostpci0
cores: 32
cpu: Haswell-noTSX
efidisk0: local-lvm:vm-1010-disk-1,efitype=4m,size=4M
hostpci0: 0000:01:00.0,pcie=1
hostpci1: 0000:06:00,pcie=1,x-vga=1
hostpci2: 0000:09:00.0,pcie=1
hostpci3: 0000:08:00.0,pcie=1
machine: q35
memory: 98304
meta: creation-qemu=9.0.2,ctime=1724257147
name: macOS-pvm-cMP31-1010
net0: vmxnet3=BC:24:11:47:96:E4,bridge=vmbr0,firewall=1
numa: 0
ostype: other
scsihw: virtio-scsi-pci
smbios1: uuid=6221be9e-cdf3-4a1f-bdbe-de95beb013a4
sockets: 2
usb0: host=05ac:0220,usb3=1
usb1: host=045e:00d1,usb3=1
usb2: host=05ac:8294,usb3=1
vga: none
vmgenid: 1fd7a385-d7f1-4d1c-a2e6-0534a3522d80OpenCore config.plist file (I tried to past the entire contents of my config.plist but apparently it made the post longer than allowed. Can't find a way to link a file to include my config.plist)
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