[Black screen on Ubuntu 20.04 VM with GPU passthrough]

Got it working! 

 

- Remove vfio-pci.ids= etc from syslinux.cfg "append video"

- VFIO bind RTX2080 via System Devices + reboot

- Add video=efifb:off to syslinux.cfg "append video" again, as I removed a tad too much

 

[Black screen on Ubuntu 20.04 VM with GPU passthrough]

I'm having similar issues with Windows 10 and GPU Passthrough w. Unraid 6.9

- VFIO bind RTX2080 via System Devices + reboot

- Start Windows results in black screen

- (Zorin also results in a black screen)

 

/var/log

Mar 4 14:07:17 ThreadRipper kernel: vfio-pci 0000:42:00.0: BAR 1: can't reserve [mem 0x80000000-0x8fffffff 64bit pref]

 

VM Log

2021-03-04T22:07:12.979196Z qemu-system-x86_64: vfio_region_write(0000:42:00.0:region1+0x101260, 0x0,8) failed: Device or resource busy

 

Any help is much appreciated! 

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-added: Unraid version