--- Comment #17 from Peter Hutterer <> ---
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*

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.

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.

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