[6.12.9] GPU passthrough on Intel iMac
Hi,
I have Unraid (6.12.9) running on my 2014 iMac (which was "retired" by Apple a couple of years ago).
I have followed Ailetics walkthrough (
Everything seemed to be going fine (up and running through VNC) until I tried to passthrough the GPU.
In the VM edit I changed the graphics card from virtual to my iMac's Radeon R7 370 / R9 270X/370X and changed the sound card to the iMac's AMD HDMI Audio (Radeon HD7000 Series).
When I
Verifying IOMMU parameters
dmesg | grep -e DMAR -e IOMMU
Intel will show something similar:
There should be a line that looks like "DMAR: IOMMU enabled".
If there is no output, something is wrong.
Verify IOMMU interrupt remapping is enabled
It is not possible to use PCI passthrough without interrupt remapping. Device assignment will fail with 'Failed to assign device "[device name]": Operation not permitted' or 'Interrupt Remapping h