On Mon, Jan 05, 2015 at 08:43:41PM +0100, Simon Thum wrote:
> You can use xinput properties, those can also be set via inputclass sections
> if I'm not mistaken.
>
> man xinput should get you to it, if not install xinput. Two optionas can be
> used to achive what you describe:
>
> Coordinate Transformation Matrix (140): 1.000000, 0.000000, 0.000000,
> 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Simon Thum, man, I love you, thank you very much! You solved the
problem! From reading a docs I didn't understood wholly the matrix,
though. Suppose I set the values of the diagonal that accords to x and
y to 2. Then we'd have:
⎡ 2 0 0 ⎤ ⎡ 1 ⎤ ⎡ 2 ⎤
⎜ 0 2 0 ⎥ · ⎜ 1 ⎥ = ⎜ 2 ⎥
⎣ 0 0 1 ⎦ ⎣ 1 ⎦ ⎣ 1 ⎦
The cursor couldn't appear now in the first pixels of the screen! I am
not sure that this is true…
Anyway, to sum up the steps to increase the resolution (or, at least,
the pointer speed):
$ xinput list #to list a devices
⎡ Virtual core pointer id=2 [master
pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave
pointer (2)]
⎜ ↳ PixArt USB Optical Mouse id=10 [slave
pointer (2)]
⎜ ↳ ETPS/2 Elantech Touchpad id=15 [slave
pointer (2)]
⎣ Virtual core keyboard id=3 [master
keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave
keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
…
We see the mouse id is 10, next look at the list of properties:
$ xinput list-props 100
Device 'PixArt USB Optical Mouse':
Device Enabled (140): 1
Coordinate Transformation Matrix (142): 1.000000, 0.000000,
0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (265): 0
Device Accel Constant Deceleration (266): 1.000000
Device Accel Adaptive Deceleration (267): 1.000000
Device Accel Velocity Scaling (268): 10.000000
Device Product ID (260): 2362, 9488
Device Node (261): "/dev/input/event5"
Evdev Axis Inversion (269): 0, 0
Evdev Axes Swap (271): 0
…
Next set the first two «ones» of the property №142 to any other value
and see does the pointer speed now good for us:
$
xinput set-prop 10 142 2.400000, 0.000000, 0.000000, 0.000000,
2.400000, 0.000000, 0.000000, 0.000000, 1.000000
That's all!
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