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I have a Dell Latitude 5590 with Ubuntu 18.04 installed alongside Windows 10 in dual-boot.

Inside Windows, I can scroll pages by holding the central button and moving the trackpoint.

Inside Ubuntu, such scrolling feature doesn't work.

Any ideas?

Thanks in advance.

(by the way, the same scrolling feature works on Ubuntu 18.04 with Lenovo Thinkpads)

2

I've found the answer and solved the problem.
I edited the file /usr/share/X11/xorg.conf.d/40-libinput.conf and I changed the following section (the one having pointer identifier), adding the two Option lines:

Section "InputClass"
        Identifier "libinput pointer catchall"
        MatchIsPointer "on"
        MatchDevicePath "/dev/input/event*"
        Driver "libinput"
        Option "ScrollMethod" "button"
        Option "ScrollButton" "2"
EndSection
  • thank you! -- btw, you can accept your own answer to the question. – neizod Sep 3 '18 at 10:37
  • This also worked for my Latitude 4790; thank you! – Adam Sep 15 '18 at 0:05

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