In that case, my touchpad was mistakingly detected to support two-finger scroll. The dconf workaround (#10) worked. Xorg.0.log attached, if it's useful.
** Attachment added: "Xorg.0.log" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1222248/+attachment/3878787/+files/Xorg.0.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1222248 Title: regression: scroll areas on touchpad do not work any more To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1222248/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs