Adam: I'm really hesitant to put it into libinput because I'm not sure
the problem scope is well understood (at least by me) and what the
actual point of it is. So far it's been a "would be nice" but - at least
these days :) - we require a bit more information about use-cases and
precise behaviours.

libinput provides two values for wheels: physical degrees and concrete
steps, so for most events on most mice you get a (15°, 1 step) tuple.
There is no room for acceleration there, if anything the acceleration
would have to be in the xf86-input-libinput driver. There we recently
added a patch to adjust the scroll distance based on the angle (see Bug
92772) so a wheel can now produce smooth scrolling for XI2 clients.

But as for any actual acceleration, someone (you? :) would have to come
up with a good plan of what the actual use-case is to solve and how to
solve it. Not necessarily with code at first but at least to get a good
idea of what's happening. And of course we'll need buy-in from the
bigger desktop environments.

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You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/619403

Title:
  [KDE] no option for mouse wheel acceleration

Status in X.Org X server:
  Unknown
Status in xorg-server package in Ubuntu:
  Confirmed

Bug description:
  I am very used to mouse wheel acceleration but I haven't found any
  setting for it in the KDE settings.

  Also, the maximum possible value you can fill there (strangely it
  counts per lines) still is very slow.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: kdebase (not installed)
  ProcVersionSignature: Ubuntu 2.6.32-24.39-generic-pae 2.6.32.15+drm33.5
  Uname: Linux 2.6.32-24-generic-pae i686
  NonfreeKernelModules: nvidia
  Architecture: i386
  Date: Tue Aug 17 20:50:50 2010
  InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100427)
  ProcEnviron:
   LANGUAGE=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: meta-kde

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