Unable to isolate iGPU despite being in its own IOMMU group

[morganL]

Lets see if there's any improvement in SCALE 23.10.1 next week.

 

[bcat]

Verified the issue described in this thread still exists after updating to 23.10.1.

 

[eldxmgw]

Many people are talking about this problem since years but mostly in conjunction with their PCIe GPUs.
Under advanced you can group your isolated GPUs.
Fine but this and this misbehavior overall doesn't help people like me with PCIe passthrough devices anything other than GPUs.
Check this here: https://www.truenas.com/community/t...u-groups-for-vm-passtrough.96096/#post-805707

 

[underpickled]

And here's the PCIe device configuration in the VM:

Been struggling with this for a while. I'm on a 12600K trying to use the iGPU in either a Plex App or a VM with Plex running. Can't isolate, just as you noted, but I also can't add it to the VM. It shows up like this (this is the correct PCIE ID that shows up in the isolation error)

Show : Add PCIE error

Neither does the iGPU show up in as available for allocation in the Scale Plex app, but it is clearly being seen by the system since it does appear in the GPU isolation menu.
Do you just not get that error when you try to add it to a VM?

 

[bcat]

Correct, I don't get that error when adding as a "PCI Passthrough Device" manually.

But I think you might have some other issue. You should be seeing the device name in the list, something like "0000:00:02.0 'Display controller': CoffeeLake-S GT2 [UHD Graphics P630] by 'Intel Corporation'". But for you it sees TrueNAS is having trouble obtaining the device info more generally. Very weird.

What version of TrueNAS are you running? I'm still on SCALE 23.10.1.3. (Haven't updated to 23.10.2 yet.)

 

[underpickled]

Correct, I don't get that error when adding as a "PCI Passthrough Device" manually.

But I think you might have some other issue. You should be seeing the device name in the list, something like "0000:00:02.0 'Display controller': CoffeeLake-S GT2 [UHD Graphics P630] by 'Intel Corporation'". But for you it sees TrueNAS is having trouble obtaining the device info more generally. Very weird.

What version of TrueNAS are you running? I'm still on SCALE 23.10.1.3. (Haven't updated to 23.10.2 yet.)

I eventually found out that the issue was that I needed a dummy HDMI plugged in for my iGPU to get recognized by the apps service. I still couldn't isolate it for a VM, but now that it works for apps I'm good to go (was just trying to get it working for Plex, whether in a VM or app). Thanks for replying though!