Comment 40 for bug 1368402

(In reply to Jason Crain from comment #8)
> I came across this in a Debian bug (https://bugs.debian.org/823195) and I
> found a workaround similar to comment #2. This works on Debian Sid, but not
> on Jessie, so this might not work on a system more than a year or two old.
>
> Use normal (non-natural) scrolling in Xfce settings and run a command like:
>
> xinput --set-int-prop 12 "libinput Natural Scrolling Enabled" 8 1
>
> You might have to replace the "12" with the ID of your mouse, which you can
> find with "xinput list". I think this is what GNOME's mouse settings does
> to enable natural scrolling.

I can confirm the command mentioned by Jason works fine here without a reboot or logout/-in. I just checked my Device-ID with the command "xinput list" before.

xubuntu@xubuntu:~$ xinput list
Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Logitech MX Anywhere 2 id=8 [slave pointer (2)]
⎜ ↳ Logitech Unifying Device. Wireless PID:404d id=9 [slave pointer (2)]

So in my case....

          xinput --set-int-prop 8 "libinput Natural Scrolling Enabled" 8 1

...works fine at every scroll-places (Firefox, Mousepad, Whiskermenu, Terminal, etc)

Xubuntu 17.10 - At the moment still in the live-session...just before the installation.