I have also had this problem - MSI Tomahawk Arctic B350, ryzen 1700, vega 56 gpu ubuntu 19.04 - ignores bios setting, attempts to boot, kernel panic with lots of AMD-Vi: Completion-Wait loop timed out
Reboot to find grub in rescue mode, and all ext4 partitions wiped. Can't boot live disc either, unless swap to an nvidia graphics card Only work around is to add the kernel parameters, but booting ubuntu shouldn't wipe my OS? -- 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/linux/+bug/1747463/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
