Easy ACS kernel patch guide for Ubuntu 20.04

Опубликовано: 03 Апрель 2026
на канале: Pavol Elsig

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In this video, we will be installing an ACS patched kernel in Ubuntu 20.04.

Download the kernel from here: https://queuecumber.gitlab.io/linux-a...

Copy the echo statements from here and use them when editing initramfs: https://github.com/pavolelsig/passthr...

Enter this into grub: pcie_acs_override=downstream

If that does not help use:
pcie_acs_override=downstream,multifunction

Download IOMMU viewer here: https://github.com/pavolelsig/IOMMU-v...

For background information about IOMMU groups: https://vfio.blogspot.com/2014/08/iom...

GPU passthrough guide for Ubuntu 20.04: • GPU passthrough guide for Ubuntu 20.04

Don't forget to boot into the ACS kernel!!!