[Wayland-bugs] [Bug 96220] TP L430 touchpad to barely usable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96220

--- Comment #8 from lightonflux <l-xdg at znn.info> ---
Did the same again and now the touchpad sends different values. Is this normal?

lof:~/ $ sudo touchpad-edge-detector /dev/input/event6  
Touchpad ETPS/2 Elantech Touchpad on /dev/input/event6
Move one finger around the touchpad to detect the actual edges
Kernel says:    x [0..2204], y [0..1160]
Touchpad sends: x [20..2183], y [24..1157] -^C

Touchpad size as listed by the kernel: 71x37mm
Calculate resolution as:
        x axis: 2204/<width in mm>
        y axis: 1160/<height in mm>

Suggested udev rule:
# <Laptop model description goes here>
evdev:name:ETPS/2 Elantech
Touchpad:dmi:bvnLENOVO:bvrG3ETA5WW(2.65):bd10/20/2015:svnLENOVO:pn2464A26:pvrThinkPadL430:rvnLENOVO:rn2464A26:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:*
 EVDEV_ABS_00=20:2183:<x resolution>
 EVDEV_ABS_01=24:1157:<y resolution>
 EVDEV_ABS_35=20:2183:<x resolution>
 EVDEV_ABS_36=24:1157:<y resolution>
lof:~/ $ sudo touchpad-edge-detector /dev/input/event6
Touchpad ETPS/2 Elantech Touchpad on /dev/input/event6
Move one finger around the touchpad to detect the actual edges
Kernel says:    x [0..2204], y [0..1160]
Touchpad sends: x [22..2184], y [15..1151] -^C--

Touchpad size as listed by the kernel: 71x37mm
Calculate resolution as:
        x axis: 2204/<width in mm>
        y axis: 1160/<height in mm>

Suggested udev rule:
# <Laptop model description goes here>
evdev:name:ETPS/2 Elantech
Touchpad:dmi:bvnLENOVO:bvrG3ETA5WW(2.65):bd10/20/2015:svnLENOVO:pn2464A26:pvrThinkPadL430:rvnLENOVO:rn2464A26:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:*
 EVDEV_ABS_00=22:2184:<x resolution>
 EVDEV_ABS_01=15:1151:<y resolution>
 EVDEV_ABS_35=22:2184:<x resolution>
 EVDEV_ABS_36=15:1151:<y resolution>

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