Hi Henning, That is great news that "intel_iommu=off" on the kernel command line did the trick.
You can follow this bug to get updates on when we will be disabling IOMMU by default in the 5.15 kernel. It should be soon, the patches are already submitted, and reviewed by the kernel team. The next step is for the patch to be applied to the git tree and the next kernel update built. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1971699 I'll let you know once there is a kernel in -proposed with IOMMU disabled. The patches missed this current SRU cycle, and will be in the next one, so it might be in a few weeks / months time. Thanks, Matthew -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1973434 Title: massive performance issues since 22.04 upgrade To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1973434/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
