I had to add the following lines to /etc/apparmor.d/abstractions /libvirt-qemu on Ubuntu 16.10.
/run/udev/data/** r, /dev/bus/usb/*/[0-9]* rw, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1515791 Title: USB passthrough - virt-aa-helper must grant /run/udev/data/ r To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1515791/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
