<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Libinput 0.19 and 0.20 ignore POINTINGSTICK_CONST_ACCEL" href="https://bugs.freedesktop.org/show_bug.cgi?id=91369#c27">Comment # 27</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Libinput 0.19 and 0.20 ignore POINTINGSTICK_CONST_ACCEL" href="https://bugs.freedesktop.org/show_bug.cgi?id=91369">bug 91369</a> from <a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> Peter Hutterer</a> <pre>E: POINTINGSTICK_CONST_ACCEL=3 this means we're treating it like a 333 dpi device which has a bit of a different acceleration, see <a href="http://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html">http://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html</a> the incline is the same but it should kick in a lot sooner than before, making the device a bit faster. tbh, your patch shouldn't even have an effect, the accel function used should be pointer_accel_profile_linear_low_dpi(). can you verify this please? (In reply to Justin Wong from <a href="show_bug.cgi?id=91369#c25">comment #25</a>) > And also, limiting linear accel from -1 to 1 is made it impossible for me to > adjust pointer speed to an acceptable value using normal way. -1 and 1 are just values for "slowest" and "fastest", they don't literally map to -1 and 1. See the curves in the first diagram of that link above, that's how they currently map for the normal accel function. We have much more liberty on how we handle this. Feel free to come up with a separate trackpoint acceleration function (it really has to be completely separate, look at the x230 bits for help). Then we can fine-tune that. We may need different ones long-term because not all trackpoints behave the same, but I'm currently flat out with other stuff so if you get started, that's only going to help.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>