https://bugs.freedesktop.org/show_bug.cgi?id=89725
--- Comment #12 from Peter Hutterer <peter.hutte...@who-t.net> --- 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. -- You are receiving this mail because: You are the assignee for the bug.
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