Hello! 

Long time user here, and i'm currently working on migrating from a dell T5500 to a hp z840.
Things went downhill from what I thought should be a fairly easy switch. I have some VM's that utilize the pci passthrough and i went to configure them, but the IOMMU groups did not exist. I checked the cpu and it supports vt-d. I checked bios settings and it shows vt-d as enabled. I did attempt to search around to find some info on here, but those items seemed to be what fixed most users issues.

I migrated back, and i'm putting together a quick test build so I can get some logs. If anyone can offer some advice, I'd appreciate it! Thank you!
 

11 minutes ago, RobertWicked said:

hp z840.

What is the CPU in the HP?

 

This is the HP support link for Vt-x and Vt-d

 

https://support.hp.com/gb-en/document/c04760917

Edited December 27, 20214 yr by SimonF

7 minutes ago, RobertWicked said:

shows vt-d as enabled

Did it explicity state VT-D or just Virtualization?  Virtualization options in BIOS enable VT-x.  VT-d is usually buried within submenus of the BIOS

it is dual Intel® Xeon® Processor E5-2680 v3.
I verified it's the options under usb security (why they put it there no one knows) and enabled vt-x and vt-d. I also made sure the bios is completely up to date.

Are you booting legacy or UEFI? please post diagnostics. 

4 hours ago, SimonF said:

Are you booting legacy or UEFI? please post diagnostics. 

I just got home to throw a trail up on the box real quick so I can pull logs and diagnostics... but now i don't need to. I totally missed the box was setup for legacy boot and I didn't notice! Switched it to uefi and it's working!!!! Thanks for catching that good sir!