This bug has re-appeared as pc-i440fx-zesty (17.04) is not in the qemu machine types in cosmic (18.10) - I can now no longer run any snapshots I made when I was running 17.04.
error: unsupported configuration: Target domain machine type pc-i440fx-cosmic does not match source pc-i440fx-zesty $ qemu-system-x86_64 -machine help Supported machines are: pc-i440fx-xenial Ubuntu 16.04 PC (i440FX + PIIX, 1996) pc-i440fx-wily Ubuntu 15.04 PC (i440FX + PIIX, 1996) pc-i440fx-trusty Ubuntu 14.04 PC (i440FX + PIIX, 1996) ubuntu Ubuntu 18.10 PC (i440FX + PIIX, 1996) (alias of pc-i440fx-cosmic) pc-i440fx-cosmic Ubuntu 18.10 PC (i440FX + PIIX, 1996) (default) pc-i440fx-cosmic-hpb Ubuntu 18.10 PC (i440FX + PIIX +host-phys-bits=true, 1996) pc-i440fx-bionic Ubuntu 18.04 PC (i440FX + PIIX, 1996) pc-i440fx-bionic-hpb Ubuntu 18.04 PC (i440FX + PIIX, +host-phys-bits=true, 1996) pc-i440fx-artful Ubuntu 17.10 PC (i440FX + PIIX, 1996) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1626070 Title: Removal of former release machine types breaks VMs using them To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1626070/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
