I am also affected by this bug. Tried booting my VM today and saw that my GPU was together with many other devices in IOMMU group 0 instead of its own group, which means I cannot PCI passthrough the GPU and start the VM.
Please see attached outputs for ls-iommu. They were created using this script: https://gist.github.com/jabbas/a8785710a5e8655045fc0be67385e887 System info Motherboard: ASUS PRIME X399-A CPU: AMD Ryzen Threadripper 2950X GPUs: NVIDIA GTX 1070 Ti + NVIDIA RTX 2080 (only the 1070 Ti is being passed through, along with its audio device) OS: Kubuntu 24.04.4 LTS ** Attachment added: "6.8.0-134-generic_ls-iommu.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2158934/+attachment/5979897/+files/6.8.0-134-generic_ls-iommu.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2158934 Title: Regression related to IOMMU grouping To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2158934/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
