I’m not even sure where to start. In HPLIP-2.8.5 there is a new ‘hp-systray’ program which is meant to be started at login.
Its purpose is to ask the user for a fax number when it receives a D-Bus signal from the hpfax backend. That’s all — so why does it sit there with a big fat ‘HP’ logo all the time? Unlike Windows, our notification area is not an advertising board.
Not that the logo is even in the notification area. Instead, it gets placed like a window, just anywhere there is space on your desktop. Nice.
That’s all disregarding the fact that none of this is any use at all if your fax queue resides on a networked CUPS server. It can send D-Bus signals if it likes, but they won’t be heard over the network.