Hello everybody!
I'm owning a Samsung N145P netbook, that comes along with an elantech
touchpad:
[ 5.949921] elantech: assuming hardware version 2, firmware version
4.2.22
[ 5.985481] elantech: Synaptics capabilities query result 0x09, 0x14,
0x0b.
It has some annoying issues, which hopefully can be resolved now as
there is some ongoing development on the driver again. I have already
tested the current "[PATCH v5 0/8] Input: elantech: add support for
newer hardware" patchset, but without success.
The device's axis ranges, which are reported to userspace, seem to be
totally wrong.
(kernel 3.0.4)
[ 17.940] (--) ETPS/2 Elantech Touchpad: x-axis range 8 - 1144
[ 17.940] (--) ETPS/2 Elantech Touchpad: y-axis range 8 - 760
(kernel 3.0.4 + patchset)
[ 16.936] (--) ETPS/2 Elantech Touchpad: x-axis range 0 - 1152
[ 16.936] (--) ETPS/2 Elantech Touchpad: y-axis range 0 - 576
I get the following ranges, when I use synclient in monitor mode to look
which values really are passed to the synaptics driver in X:
(kernel 3.0.4)
x: 0-819
y: 355-760
(kernel 3.0.4 + patchset)
x: 0-819
y: 171-576
Because of this differences the edge/scrolling areas of the touchpad are
calculated wrong and can't be used by default.
The other issue occurs very often when two fingers are used:
(kernel 3.0.4)
time x y z f w l r u d m multi gl gm gr gdx gdy
7.982 1020 -268 127 2 7 0 0 0 0 0 00000000
(kernel 3.0.4 + patchset)
time x y z f w l r u d m multi gl gm gr gdx gdy
3.118 1020 -444 127 2 7 0 0 0 0 0 00000000
When the fingers are released this strange values are reported. This
makes two finger scrolling unusable, because it jumps back to the
beginning everytime.
--
Regards,
Richard Schütz
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