GPU Passthrough Error

[jrtz4]

Just started setting up VMs on my new machine, but I'm unable to passthrough a gpu. I have 5 HD 7470s attached, and when I set one of them to passthrough (even with their audio devices), it gives me this error:

 

Here's a copy of my diagnostics

tower-diagnostics-20200214-1438.zip

[Chess]

Looks like something else is in the iommu group based on your diagnostics.. See below:

 

/sys/kernel/iommu_groups/14/devices/0000:00:1c.0
/sys/kernel/iommu_groups/14/devices/0000:02:00.0
/sys/kernel/iommu_groups/14/devices/0000:02:00.1

 

You can only pass through a GPU if it is the only thing (plus it's audio) that is in that immou group. 

 

Try ACS Override in the VM Manager Settings icon. That might break the GPU out to it's own group.

 

https://wiki.unraid.net/UnRAID_6/VM_Management#Help.21_Failed_to_set_iommu_for_container:_Operation_not_permitted

 

See the above link for more help.

 

 

Edited February 14, 2020 by Chess
Edit

[jrtz4]

1 hour ago, Chess said:

Looks like something else is in the iommu group based on your diagnostics.. See below:

 

/sys/kernel/iommu_groups/14/devices/0000:00:1c.0
/sys/kernel/iommu_groups/14/devices/0000:02:00.0
/sys/kernel/iommu_groups/14/devices/0000:02:00.1

 

You can only pass through a GPU if it is the only thing (plus it's audio) that is in that immou group. 

 

Try ACS Override in the VM Manager Settings icon. That might break the GPU out to it's own group.

 

https://wiki.unraid.net/UnRAID_6/VM_Management#Help.21_Failed_to_set_iommu_for_container:_Operation_not_permitted

 

See the above link for more help.

 

 

Thanks so much, that did the trick!

[Chess]

6 minutes ago, jrtz4 said:

Thanks so much, that did the trick!

 

You are very welcome! Had the same issue when I first started out too.

 

Let me know if you have any more issues with pass-through.