FIXED!!! As soon as I finished the lengthy post above (#41) I upgraded Xubuntu 18.10 64-bit from kernel 4.18.0-10-generic to 4.18.0-11-generic and I can now boot the Windows 10 guest. Everything works, although the Windows 10 screen does not quite fit in the QEMU window (a bit too long) and none of the items in the QEMU "View" menu changes anything. Perhaps I can google this and find a fix. But it is usable so I'm not complaining. Hopefully it stays usable going forward.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767857 Title: Kernel 4.4.0-122 Breaks qemu-system-x86 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1767857/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs