I just switched from Ubuntu 17.10 to Debian Buster Sid, using GNOME 3.26.2.
I'm using a Thinkpad T430. See below for more information on my touchpad.
$ grep -B 5 mouse /proc/bus/input/devices I: Bus=0011 Vendor=0002 Product=0007 Version=01b1 N: Name="SynPS/2 Synaptics TouchPad" P: Phys=isa0060/serio1/input0 S: Sysfs=/devices/platform/i8042/serio1/input/input2 U: Uniq= H: Handlers=mouse0 event1 -- [...]
The problem is that two finger scrolling is very unprecise due to jumping. While I'm scrolling everything works fine, but as soon as I'm lifting up my fingers to stop, the page just randomly jumps or scrolls a bit randomly up or down. I never experienced such behaviour under Ubuntu.
I suspect that the motion threshold is simply to low, so that my lifting figures are detected as another scroll.
All solutions for similar issues that I found requiere to edit the conf file which, as I found out, isn't used under Wayland.
So I checked gsettings but didn't find a proper key:
$ gsettings list-keys org.gnome.desktop.peripherals.touchpad send-events natural-scroll tap-to-click two-finger-scrolling-enabled left-handed click-method speed tap-and-drag edge-scrolling-enabled disable-while-typing
How to fix this?
Thank you and have a nice day!