Hi folks!

I'm having this on every boot!

Please, help!

It happens when I change this in osUNRAID:

kernel /bzimage

append intel_iommu=on pcie_acs_override=downstream initrd=/bzroot

to this:

kernel /bzimage

initrd=/bzroot

I want to move back to the default

kernel /bzimage

initrd=/bzroot

I changed to try to solve this problem : https://forums.unraid.net/topic/193472-new-motherboard-no-iommu-groups-available-no-conbee-ii-connection-no-smart-house-my-wife-is-pissed-off

But I solved enabling the VTD on MotherBoard.

Are you disabling PCIe ACS override from the GUI or manually?

@JorgeB

I've tried both...

You can try redoing the flash drive, backup the current one first and then recreate it using the USB tool and just restore the bare minimum, like the key, super.dat and the pools folder for the assignments, also copy the docker user templates folder (\config\plugins\dockerMan\templates-user), if all works you can then reconfigure the server or try restoring a few config files at a time from the backup to see if you can find the culprit.

Thank you very much @JorgeB ! To be honest, I don't feel very comfortable doing this without a very basic step-by-step... I've been fighting with the server since the migration to a new motherboard and processor few days ago. Now the server is up, but I can't access the shares via SAMBA using my desktop (Windows11), and PLEX is not accepting the parameter "--runtime=nvidia" anymore.

Your suggestion of doing step-by-step is very clever and very promising, but my main concern is to do something terrible and lose all I have...

I've attached my diagnostics file, just in case you are willing to dive into it.

Thank you very much for your time and help. I'm looking forward to hearing from you, or anyone that can also help.

asilo-diagnostics-20250915-0634.zip

As long as you backup the flash drive before starting, you shouldn't lose anything, and that will confirm if it's a config problem. Though before that you can try booting with a different flash drive using a stock install, no key needed; if that boots fine, it basically confirms it's config-related.

Thank you @JorgeB !

I'm making some progress giving the diagnostic files to claude.ai to analyze. However, I double-checked and when I remove the parameter "append intel_iommu=on" from the flash->unraidOS I got a "kernel panic" on the boot. I'm wondering if this is a bug in UNRAID...

What is the best way to report a bug to the staff?

You should never get a panic when removing that option, and thus booting with default settings; there's likely some config issue with your install, recommend

On 9/15/2025 at 12:24 PM, JorgeB said:

try booting with a different flash drive using a stock install, no key needed; if that boots fine, it basically confirms it's config-related.