Thanks for reporting this bug. Looking at my system,
100 ✗ serge@sl ~ $ apt-cache rdepends gir1.2-spice-client-glib-2.0 gir1.2-spice-client-glib-2.0 Reverse Depends: gir1.2-spice-client-glib-2.0:i386 libspice-client-glib-2.0-dev gir1.2-spice-client-gtk-3.0 gir1.2-spice-client-gtk-2.0 0 ✓ serge@sl ~ $ apt-cache rdepends gir1.2-spice-client-gtk-2.0 gir1.2-spice-client-gtk-2.0 Reverse Depends: gir1.2-spice-client-gtk-2.0:i386 libspice-client-gtk-2.0-dev 0 ✓ serge@sl ~ $ apt-cache show virt-manager| grep spice Recommends: libvirt-bin (>= 1.2.7), gnome-icon-theme, gir1.2-spice-client-gtk-3.0 127 ✗ serge@sl ~ $ apt-cache show gir1.2-spice-client-gtk-3.0 | grep gir1.2 Package: gir1.2-spice-client-gtk-3.0 Depends: gir1.2-glib-2.0, gir1.2-gtk-3.0, gir1.2-spice-client-glib-2.0 (= 0.25-1build1), libspice-client-gtk-3.0-4 (>= 0.14) Filename: pool/universe/s/spice-gtk/gir1.2-spice-client-gtk-3.0_0.25-1build1_amd64.deb So the problem appears to be that gir1.2-spice-client-gtk-3.0 is only recommended, not depended upon, by virt-manager. (If I'm reading this right) ** Changed in: virt-manager (Ubuntu) Status: New => Triaged ** Changed in: virt-manager (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1443954 Title: USB redirection fails with spice-client-error-quark: ... 'Not authorized' (0) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/1443954/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs