AMD-v was not enabled but with it enabled booting without iommu=soft results in a crash that only lasts about a second and then loses HDMI connection. This is with the Ubuntu Kernel
** Attachment added: "amdv and iommu enabled ubuntu kernel" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1747463/+attachment/5052073/+files/ubuntukernel.jpg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1747463 Title: kernel crashes during boot unless IOMMU is disabled on Ryzen 1800X To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1747463/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs