GUI won't let me open files as "Open as Administrator" if logged in as another

[ralphy]

One question: If pkexec has the advantage of resulting in more intuitive or more convenient behavior on multi-user machines, why does LL use gksu out of the box and not pkexec? Is there some advantage to gksu somewhere?

Linux Lite uses pkexec for the most part. When you launch Install Updates, Lite Tweak, etc... they are all authenticated using pkexec and not gksu. I think Thunar custom actions is one of the few exceptions. It might be addressed at some point I guess.

I can't really tell what advantages gksu offers (if any) in Linux Lite other than been used as a simple front-end (an old one I must add). It does limit admins in multi-users setups as you just experienced (even though there are ways around it). Personally, I prefer pkexec everywhere since I don't use a sudoer account for daily work (for sanity).

Maybe we see something done about it with Linux Lite 4 but then again, it might not bee quite a necessity for the vast majority and that's why it has been left as it is today.