<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - XPS13 L322X touchpad laggy" href="https://bugs.freedesktop.org/show_bug.cgi?id=104990#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - XPS13 L322X touchpad laggy" href="https://bugs.freedesktop.org/show_bug.cgi?id=104990">bug 104990</a> from <a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> Peter Hutterer</a> <pre>It's a so-called schmitt trigger, pressure needs to go above "down" to be detected as touch and below "up" to be released again. down > up to make the touch more resilient. libinput:name:*CyPS/2 Cypress Trackpad:dmi:*svnDell:*pnXPSL322X* LIBINPUT_ATTR_PRESSURE_RANGE=105:60 LIBINPUT_ATTR_PALM_PRESSURE_THRESHOLD=230 Something like this should work. Check /sys/class/dmi/id/modalias and adjust the dmi bit accordingly, make sure the svn and pn bits match. <a href="https://wayland.freedesktop.org/libinput/doc/latest/faq.html#faq_hwdb_changes">https://wayland.freedesktop.org/libinput/doc/latest/faq.html#faq_hwdb_changes</a> I'll need you to figure out that hwdb match though, I can't test this locally without the same machine so anything I'd merge is prone to be buggy.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>