<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - Default settings are unusable with thinkpad x230 touchpad" href="https://bugs.freedesktop.org/show_bug.cgi?id=89725#c12">Comment # 12</a> on <a class="bz_bug_link bz_status_ASSIGNED " title="ASSIGNED - Default settings are unusable with thinkpad x230 touchpad" href="https://bugs.freedesktop.org/show_bug.cgi?id=89725">bug 89725</a> from <a class="email" href="mailto:peter.hutterer@who-t.net" title="Peter Hutterer <peter.hutterer@who-t.net>"> Peter Hutterer</a> <pre>The min/max provided by the touchpad are usually less than what is actually provided. Run libevdev's touchpad-edge-detector to figure out the real min/max for the touchpad and then divide the range by the resolution. With the one announced by the driver the touchpad should only be ~27mm high, even if we account for a 10-20% under-reporting on the range we still don't get near the 45 you measured. The x220t touchpad is equally bad. Real measured width is [1316, 5627]@75 units/mm. Which would be 57.5mm, real size is 75mm. Height is [1355, 4826]@129 -> 27mm when it's really 42mm. That aside, I don't notice the jumping problem on the x220t much, and the coordinates seem to be close enough together.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>