Vertical Touchpad Scroll persistence

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First, why are you using this method to set touchpad properties? Assuming you are using a supported DE, the control center should offer up all the scroll methods supported by the union of your hardware capabilities and libinput. Second, if you're using libinput and xinput is working, then you are using libinput's xorg compatibility input driver. This means you can use the traditional xorg methods to set persistent options (see man xorg.conf.d).

Here's a link that will walk you through it: https://wiki.archlinux.org/index.php/...

I experienced a similar problem and had to use synaptics. However, have in mind that synaptics is being deprecated, and that this workaround won't work on wayland. See this answer for more information.

I created "touchpad.conf" on /etc/X11/xorg.conf.d/

sudo nano /etc/X11/xorg.conf.d/touchpad.conf

And I put this inside:

Section  "InputClass"
      Identifier  "touchpad catchall"
      Driver  "synaptics"
      MatchIsTouchpad  "on"

      ####################################
      ## The lines that you need to add ##
      # Enable left mouse button by tapping
      Option  "TapButton1"  "1"
      # Enable vertical scrolling
      Option  "VertEdgeScroll"  "1"
      # Enable right mouse button by tapping lower right corner
      Option "RBCornerButton" "3"
      # Enable scroll middle button by tapping upper right corner
      Option "RTCornerButton" "2"
      # Velocity
      Option "MinSpeed" "1"
      Option "MaxSpeed" "1"
      ####################################

      MatchDevicePath  "/dev/input/event*"
EndSection

You should test how much velocity works for you. I like it fast. Also, you could check what other options you might want to set. I found this article very helpful.

I hope it helps.

Best regards, Esteban