https://bugs.freedesktop.org/show_bug.cgi?id=106425
--- Comment #4 from Chris Koresko <[email protected]> ---
I applied the changes in /etc/udev/hwdb.d/99-touchpad-pressure.hwdb as follows:
evdev:name:AlpsPS/2 ALPS
GlidePoint:dmi:bvnDellInc.:bvrA25:bd02/01/2018:svnDellInc.:pnLatitudeE7240:pvr00:rvnDellInc.:rn0PRPKP:rvrA00:cvnDellInc.:ct9:cvr:*
EVDEV_ABS_00=92:1948:19:16
EVDEV_ABS_01=127:1430:25:16
EVDEV_ABS_35=92:1948:19:16
EVDEV_ABS_36=127:1430:25:16
With the "fuzz" set to 16 the behavior of the touchpad is tolerable, but still
pretty poor. Higher levels seem to interfere with two-finger scrolling.
I'm tempted to insert a rant here about the reason Dell seems to love including
these awful ALPS touchpads in high-end laptops (though I did try a newer Dell
and its touchpad was fine).
Thanks much for your help with this. I've been playing around with filters to
apply to the dirty data from the touchpad and will let you know if I come up
with anything useful.
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