Description of problem: * In Fedora 21, scrolling with a touchpad and releasing the finger(s) from the touchpad causes the scrolling to continue but while decelerating. * In Fedora 22, scrolling with a touchpad and releasing the finger(s) from the touchpad causes the scrolling to stop immediately. Version-Release number of selected component (if applicable): According to "dnf info libinput": Name : libinput Arch : x86_64 Epoch : 0 Version : 0.15.0 Release : 1.fc22 How reproducible: Always reproducible. Steps to Reproduce: 1. Scroll using a touchpad. 2. Release your finger(s) from the touchpad while still scrolling. Actual results: Scrolling immediately stops. Expected results: Scrolling continues while decelerating. Additional info: Fedora 22 Workstation 64-bit GNOME 3.16.2 Dell Inspiron 1525 Laptop Update to Fedora 22 from Fedora 21 via FedUp
I can confirm this bug, momentum doesn't exists any more. Fedora release 22 (Twenty Two) GNOME 3.16.2 Linux renatomefi.dev 4.0.4-301.fc22.x86_64 #1 SMP Thu May 21 13:10:33 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
That's actually intended. kinetic scrolling should've never been in the driver and causes a couple of other bugs that are effectively unfixable. libinput doesn't provide kinetic scrolling itself but it provides enough information for the compositor or client to implement it. See http://who-t.blogspot.com.au/2015/03/libinput-scroll-sources.html That requires the toolkits to support this though. GTK already does some of it and we're working on this for wayland (multiple things need to come together here).