https://bugs.freedesktop.org/show_bug.cgi?id=100463
[email protected] changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|FIXED |---
Status|RESOLVED |REOPENED
--- Comment #25 from [email protected] ---
Reopening. I can confirm this is still happening on my Samsung 870Z5G with Arch
Linux and an Elantech touchpad, and it is definitely version-related.
While I was on 1.6.3 everything worked fine, but on both 1.7 and 1.8 the
touchpad is unusable. I am currently using libinput 1.8.0.
I fixed it by following the instructions at
https://wayland.freedesktop.org/libinput/doc/latest/touchpad_pressure.html with
the values found by Paul. I created /etc/udev/hwdb.d/99-touchpad-pressure.hwdb
containing:
svnSAMSUNGELECTRONICSCO.,LTD.:pn870Z5G/880Z5F
LIBINPUT_ATTR_PRESSURE_RANGE=10:8
After a Wayland restart everything works again.
Combinations I tested:
libinput <= 1.6.3 + kernel < 4.12 -> ok
libinput <= 1.6.3 + kernel >= 4.12 -> touchpad not responding
libinput == 1.7.x + kernel == 4.11 -> bad pressure values
libinput == 1.8.0 + kernel == 4.11 -> bad pressure values
libinput == 1.8.0 + kernel == 4.11 + pressure fix -> ok
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