I spoke too soon.
After reading posting at the bottom, I ran the command
sudo journalctl -g 00:14.0
in dom0
May 07 11:14:12 dom0 libvirtd[1849]: internal error: Unable to reset PCI device 0000:00:14.0: internal error: Unable to reset PCI device 0000:00:0d.0: no >
May 07 11:14:12 dom0 libvirtd[1849]: internal error: Unable to reset PCI device 0000:00:0d.2: internal error: Unable to reset PCI device 0000:00:14.0: int>
May 07 11:14:12 dom0 libvirtd[1849]: internal error: Unable to reset PCI device 0000:00:0d.3: internal error: Unable to reset PCI device 0000:00:0d.2: int>
May 07 11:14:15 dom0 libvirtd[1849]: internal error: Unable to reset PCI device 0000:00:14.0: internal error: Unable to reset PCI device 0000:00:0d.0: no >
May 07 11:14:15 dom0 libvirtd[1849]: internal error: Unable to reset PCI device 0000:00:0d.2: internal error: Unable to reset PCI device 0000:00:14.0: int>
May 07 11:14:15 dom0 libvirtd[1849]: internal error: Unable to reset PCI device 0000:00:0d.3: internal error: Unable to reset PCI device 0000:00:0d.2: int>