How to break up IOMMU groups


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15 hours ago, Squid said:

nothing you can do unless you can move a controller to a different slot

And the different slot may mean in a whole different motherboard. IOMMU groups are dictated by the motherboard design.


That's the primary reason for searching out someone who is currently running what you are trying to achieve, and copying their build exactly.

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@jonathanm @Squid


I used the ACS override in multiple configurations in conjuntion with my Bios xhci settings to try to break the group up and force the USB devices onto another controller with no success.

I wonder, could you flood the controller by attaching external USB hubs abd filling them with random usb components (in this case IOMMU group 3) and cause the mobo to reassign the "over flow" onto another buss?

Just a thought. I am a newb so.

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