Thank you so much!! This worked for me also.
For other Linux noobs like me… here is exactly what I did:
Installed xorg-xinput package with Octopi (don’t know if I needed to but I did it before the other items)
ln -s /usr/share/X11/xorg.conf.d/10-evdev.conf /etc/X11/xorg.conf.d/10-evdev.conf
------This will create a duplicate file in the /etc/X11/xorg.conf.d/ folder and create a system link from the first to the new one.
rn /etc/X11/xorg.conf.d/10-evdev.conf /etc/X11/xorg.conf.d/11-evdev.conf
-------This renames the new file
-------This opens the new file in a text editor.
-------leafpad is the terminal text editor I use. You may use or have a different one.
-------Modify the text in the /etc/X11/xorg.conf.d/11-evdev.conf file to be exactly this:
# Catch-all evdev loader for udev-based systems
# We don't simply match on any device since that also adds accelerometers
# and other devices that we don't really want to use. The list below
# matches everything but joysticks.
Identifier "evdev pointer catchall"
------Save the file and exit text editor
Reboot system (again, I don’t know if this was needed but I did it)
Advanced mouse settings should now be there!
More experienced users, please feel free to correct me on any of this if I missed anything.