Since it appears that the problem is not my Xubuntu software setup (see post #33), I thought that maybe it is my hardware setup, which is rather old. So here is my hardware setup for you to consider:
Dell Inspiron 518 desktop (2008?) Dell DG33M04/Foxconn G33M Motherboard Intel G33 + ICH9 chipset 8GB memory Intel Core 2 Duo E8400 CPU (replaced original E7300 - no VT-x) -- 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