https://bugs.freedesktop.org/show_bug.cgi?id=105535
--- Comment #7 from Matthias Baur <thats+freedesk...@matthiasbaur.me> ---
Thanks, I've patched the measurement tool as following:
diff --git a/tools/libinput-measure-touchpad-pressure
b/tools/libinput-measure-touchpad-pressure
index 89dd117f..7ea44bee 100755
--- a/tools/libinput-measure-touchpad-pressure
+++ b/tools/libinput-measure-touchpad-pressure
@@ -155,7 +155,7 @@ class Device(object):
# then extract the pressure absinfo from that
all_caps = self.device.capabilities(absinfo=True)
caps = all_caps.get(evdev.ecodes.EV_ABS, [])
- p = [cap[1] for cap in caps if cap[0] == evdev.ecodes.ABS_MT_PRESSURE]
+ p = [cap[1] for cap in caps if cap[0] in
[evdev.ecodes.ABS_MT_PRESSURE, evdev.ecodes.ABS_PRESSURE] ]
if not p:
raise InvalidDeviceError("device does not have ABS_MT_PRESSURE")
@@ -226,6 +226,10 @@ def handle_abs(device, event):
s = device.current_sequence()
s.append(Touch(pressure=event.value))
print("\r{}".format(s), end="")
+ elif event.code == evdev.ecodes.ABS_PRESSURE:
+ s = device.current_sequence()
+ s.append(Touch(pressure=event.value))
+ print("\r{}".format(s), end="")
def handle_event(device, event):
Seems to work now :) I'm currently experimenting with it, but think 32:25
should be a good value to start with.
What I found kind of strange are the hwdb default values:
s0me0ne@s0me0ne-Thinkpad:~/Sources/libinput$ sudo
./tools/libinput-measure-touchpad-pressure
Using SynPS/2 Synaptics TouchPad: /dev/input/event15
Ready for recording data.
Pressure range used: 25:30
Palm pressure range used: 130
Place a single finger on the touchpad to measure pressure values.
Ctrl+C to exit
^C
The man page of libinput-measure-touchpad-pressure says "The thresholds have to
be in device-specific pressure values and it is required that down >= up.".
"down >= up." seems to be not fulfilled.
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