Hi, I am aware of this since several weeks and its on my To-Do list. I wanted to do it properly and add xdg to xdg-su (and send patches upstream). LXQt upstream has tried to get LXQt into the freedesktop stuff before but failed, I don't remember why but guess it was just getting forgotten by them or similar. Jerome Leclanche, from the LXQt team, knows more about this. Yes there exists lxqt-sudo and my goal was to patch xdg-su so it will start it when LXQt is recognized as the running session. The previous maintainers of LXQt on openSUSE decided to use gnomesu as an alternative since AFAIK at this time lxqt-sudo didn't exist. Adding new functionallity to QTerminal should be trivial, the code is easily readable and the main developer of it is both a member of LXQt and also involved and using openSUSE. But let's open another bug for this where we discuss what needs to be changed etc. I spotted a lot of things that can be improved and am working on it and hope to do it for the new relase 0.11 which was supposed to come out several weeks (months?) ago but got delayed. Which is not big a drawback since I didn't have much time during that time anyways ;-) If anybody wants to patch xdg-su feel free to do so. Currently I am working on LXQt git builds, which then should enable us to spot mistakes early on and also be very quick when a new upstream release comes up since we will already have fitting spec files.