[Wayland-bugs] [Bug 103572] Libinput: 1.9+: Magic Trackpad stutters, is unresponsive

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103572

--- Comment #22 from Mario <mario.diraimondo at gmail.com> ---
I was able to make changes to the DB in order to change some parameter for the 
Trackpad. I was not able to find proper params to restore the previous
behavior... 

On the Magic Trackpad you can just measure the touchsize using:
$ libinput measure touch-size /dev/input/event<put your device id>

I created a file /etc/udev/hwdb.d/99-my.hwdb with content:
libinput:touchpad:input:b0005v05ACp030E*
 LIBINPUT_ATTR_TOUCH_SIZE_RANGE=<put one number>:<put another number>

To reload the database you can use:
$ sudo udevadm hwdb --update
$ sudo udevadm trigger /sys/class/input/event<put your device id>

I still have many problems to get reliable multi-touch gestures. I got a Dell
XPS 13 and, using the same gesture with almost the same pressure on the
internal touchpad, I'm not able to get a consistent behavior on both devices.
Libinput 1.9 was a big regression for the external touchpad (in my
experience)...

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