I have a similar problem as Ibrahim Awwal. I have just upgraded to 18.04
and my middle click scrolling stopped working.
my output of xinput list-props "TPPS/2 IBM TrackPoint"
Device 'TPPS/2 IBM TrackPoint':
Device Enabled (143): 1
Coordinate Transformation Matrix (145): 1.000000, 0.000000, 0.000000,
0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Natural Scrolling Enabled (349): 0
libinput Natural Scrolling Enabled Default (350): 0
libinput Scroll Methods Available (351): 0, 0, 1
libinput Scroll Method Enabled (352): 0, 0, 1
libinput Scroll Method Enabled Default (353): 0, 0, 1
libinput Button Scrolling Button (354): 2
libinput Button Scrolling Button Default (355): 2
libinput Middle Emulation Enabled (356): 0
libinput Middle Emulation Enabled Default (357): 0
libinput Accel Speed (358): 0.000000
libinput Accel Speed Default (359): 0.000000
libinput Accel Profiles Available (360): 1, 1
libinput Accel Profile Enabled (361): 1, 0
libinput Accel Profile Enabled Default (362): 1, 0
libinput Left Handed Enabled (363): 0
libinput Left Handed Enabled Default (364): 0
libinput Send Events Modes Available (266): 1, 0
libinput Send Events Mode Enabled (267): 0, 0
libinput Send Events Mode Enabled Default (268): 0, 0
Device Node (269): "/dev/input/event7"
Device Product ID (270): 2, 10
libinput Drag Lock Buttons (365): <no items>
libinput Horizontal Scroll Enabled (366): 1
Have you fixed your problem within the last year?
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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-input-evdev in Ubuntu.
https://bugs.launchpad.net/bugs/1246683
Title:
Middle button does not work for scrolling in Ubuntu 13.10
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https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-evdev/+bug/1246683/+subscriptions
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