Unbalanced speed of pointer movement vs scrolling on touchpads
This is reproducible on Lenovo Yoga 2 Pro. I use MATE desktop environment on Arch Linux.
I usually slightly reduce touhpad acceleration in system settings, so that I can point to various things on the screen more precisely. This setting does affect how much I should move my finger on the touchpad in order for the pointer to move a given distance. However, scrolling is not affected - but it should be. An extreme case would be for somebody who sets extremely high or extremely low touchpad acceleration - then movement speed will be obviously unbalanced with scrolling.
I realize that there is already a similar WONTFIX bug about configuration of scrolling speed, #185 (closed). But, that bug is about mouse wheel based scrolling. Mice do have physical stops, and that bug is about changing the number of lines to be scrolled per one stop, and I agree that it doesn't belong to libinput. In contrast, this bug is strictly about touchpads, where there are no physical stops, and thus the same argument does not apply.
libinput version you encountered the bug on
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/input14 U: Uniq= H: Handlers=event10 mouse1 B: PROP=5 B: EV=b B: KEY=e520 10000 0 0 0 0 B: ABS=660800011000003
Other log output:
libinput recordoutput: will provide later
libinput debug-events --verboseoutput: will provide later