There is no intel-microcode package installed, only intel-gpu-tools and libdrm-intel1. But I'll try that iommu kernel command line.
Quote from https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1729568/comments/20 : Disabling iommu might fix the issue https://www.reddit.com/r/archlinux/comments/732hp4/arch_freezing_after_413_kernel_update/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1736116 Title: Host freezes when starting a VM with VirtualBox To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/1736116/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
