Comment 0 for bug 1809993

Summary:
After kernel update the trackpad advanced functions, like two finger scrolling and mouse acceleration have stopped working.

Expected Result:
Two finer scroll works and the mouse has acceleration features work

Actual Result:
Two finer scroll works and the mouse has acceleration features do not work

Steps to reproduce:
1. Lenovo X1C6 (LENOVO 20KHCTO1WW/20KHCTO1WW, BIOS N23ET59W (1.34 ) 11/08/2018)
2. Install 18.04 LTS
3. config-4.15.0-42-generic acceleration works, while config-4.15.0-43-generic does not

This appears to be some sort of regression or change in behavior between kernel versions.