This affects me too. I noticed it as soon as I upgraded from 16.04 to 18.04.1.
It took me a while to find a workaround, so I'll document it here to help others. I believe there are other possible ways around this, but this one worked for me: First, I ran synclient, to find the current scroll values. For me they were: VertScrollDelta = -73 HorizScrollDelta = 73 As a test, I ran this command: synclient HorizScrollDelta=-73 That fixed the problem, but only until the next reboot. To run this every time I started up, I created a script named FixNaturalHorizontalScroll which contained just that line, and I saved that script in /usr/local/bin. I used this command to make it executable: sudo chmod +x /usr/local/bin/FixNaturalHorizontalScroll Finally, I had to manually run gnome-session-properties in order to add my new script as a startup script. I would be happy to help debug this. It's going to be a pretty frustrating introduction for new users coming from other systems. And it took me a few hours to piece together that workaround. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1767995 Title: Horizontal scroll doesn't honor Natural Scrolling preference To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1767995/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs