Ah. After watching the DBus traffic it seems that this is partially due to the run-as-system-user patches. colord uses PolicyKit to check the user's authorisation, and PolicyKit doesn't allow an unpriviledged user to check whether a non-self user has priviledges. The error message generated is:
GDBus.Error:org.freedesktop.PolicyKit1.Error.NotAuthorized: Only trusted callers (e.g. uid 0) can use CheckAuthorization() for subjects belonging to other identities' This means that applications that try to register devices with colord will fail, which is why the display and cups integration isn't working. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/837851 Title: "Color" tool in GNOME System Settings only recognizes my webcam as color-manageable device To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/colord/+bug/837851/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
