[Bug 1379346] [NEW] Error creating a VM: internal error: No PCI buses available

[Felix Geyer]

Public bug reported:

In utopic creating a libvirt VM (through virt-manager or virt-install)
fails with: internal error: No PCI buses available.

This is caused by an Ubuntu patch in the qemu package that changes the default machine type to pc-i440fx-utopic.
It also adds an alias "ubuntu" for pc-i440fx-utopic. This seems to be the one actually used.

libvirt has some rules hard-coded how to set up the PCI bus depending on the machine type.
Obviously it doesn't check for "ubuntu".

Attached is a patch that extend the libvirt checks for the ubuntu
machine type.

** Affects: libvirt (Ubuntu)
     Importance: Undecided
         Status: New

** Patch added: "ubuntu_machine_type.patch"
   https://bugs.launchpad.net/bugs/1379346/+attachment/4229595/+files/ubuntu_machine_type.patch

** Summary changed:

- Erro create a VM: internal error: No PCI buses available
+ Error creating a VM: internal error: No PCI buses available

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Title:
  Error creating a VM: internal error: No PCI buses available

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