![]() ![]() Menuentry 'Arch Linux, passthrough RX 6800 XT'. Make sure it has the correct command line flags you added earlier.ĭ) Add that custom boot entry to the bottom of /etc/grub.d/40_custom.īonus points: Rename the entry to be more descriptive. GRUB_CMDLINE_LINUX_DEFAULT="amd_iommu=on vfio-pci.ids=1002:73bf,1002:ab28"ī) Run sudo grub-mkconfig -o /boot/grub/grub.cfgĬ) Copy your favorite boot entry from /boot/grub/grub.cfg (Just copy the first block after # BEGIN /etc/grub.d/10_linux #). Virtual Function I/O (or VFIO) allows a virtual machine (VM) direct access to a PCI hardware resource, such as a graphics processing unit (GPU). In my case:Ī) First, edit /etc/default/grub to the configuration you want to use when you select your passthrough option. Description: The Linux kernel and modules (ACS override and i915 VGA arbiter patches) Upstream URL: Keywords: acs arbiter assignment gpu i915 kvm override passthrough pci qemu vfio vga. Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly. What we're going to do is keep vfio enabled all the time, and only set the vfio ids when you boot your custom entry.ġ) Edit your file in modprobe.d to only contain the softdep line. To enable snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap. In case of the Thinkpad P53 (and maybe other high end Thinkpads) it does work well due to the muxed GPU hardware and the decent IOMMU layout. However, if you already have passthrough set up it should be relatively easy to follow along.įirst of all, vfio ids can be passed in either the kernel parameters or /etc/modprobe.d/. It is also known as IOMMU or VFIO and the best way to get a virtual machine running with GPU passthrough is by using QEMU. ![]() Note: I am using an amd gpu which makes this much easier. This took me a long time to figure out, so posting my fix here for anyone who might find it. ![]()
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