Public bug reported:
The touchpad on my new laptop works fine (with multitouch and all) but when I
stop moving my finger the mouse pointer still moves for a quarter of a second
or similar as if a low-pass would filter the movements. Unfortunately this
delay makes it hard not to miss a button at the first try and having to come
back because stopping exactly a quarter of a second before the pointer hits the
button - involves complex timing; When clicking or tapping on the buttons I
don't get any noticable delay.
I know that when using the OS from M$ you can activate a low-pass filter for
movements that is called "trägheitsbewegung" in the german version of that OS.
Is there a way to do the same on Ubuntu?
[148735.141] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad
(/dev/input/event12)
[148735.141] (**) ETPS/2 Elantech Touchpad: Applying InputClass "evdev touchpad
catchall"
[148735.141] (**) ETPS/2 Elantech Touchpad: Applying InputClass "Multitouch
Touchpad"
[148735.141] (II) LoadModule: "mtrack"
[148735.141] (II) Loading /usr/lib/xorg/modules/input/mtrack_drv.so
[148735.141] (II) Module mtrack: vendor="X.Org Foundation"
[148735.141] compiled for 1.15.0, module version = 0.1.0
[148735.141] Module class: X.Org XInput Driver
[148735.142] ABI class: X.Org XInput driver, version 20.0
[148735.142] (II) Using input driver 'mtrack' for 'ETPS/2 Elantech Touchpad'
[148735.142] (**) ETPS/2 Elantech Touchpad: always reports core events
[148735.142] (**) ETPS/2 Elantech Touchpad: always reports core events
[148735.142] (**) Option "config_info"
"udev:/sys/devices/platform/i8042/serio1/input/input7/event12"
[148735.142] (II) XINPUT: Adding extended input device "ETPS/2 Elantech
Touchpad" (type: TOUCHPAD, id 13)
[148735.142] (II) device control: init
[148735.142] (**) Option "Device" "/dev/input/event12"
[148735.142] (II) mtrack: devname: ETPS/2 Elantech Touchpad
[148735.142] (II) mtrack: devid: 2 e 0
[148735.142] (II) mtrack: caps: left mtdata
[148735.142] (II) mtrack: 0: min: 0 max: 2220
[148735.142] (II) mtrack: 5: min: 0 max: 3256
[148735.142] (II) mtrack: 6: min: 0 max: 1776
[148735.142] (II) mtrack: 9: min: 0 max: 65535
[148735.142] (II) mtrack: 10: min: 0 max: 255
[148735.156] (**) ETPS/2 Elantech Touchpad: (accel) keeping acceleration scheme
1
[148735.156] (**) ETPS/2 Elantech Touchpad: (accel) acceleration profile 0
[148735.156] (**) ETPS/2 Elantech Touchpad: (accel) acceleration factor: 2.000
[148735.156] (**) ETPS/2 Elantech Touchpad: (accel) acceleration threshold: 4
[148735.156] (II) device control: on
[148735.156] (II) Touchpad supports regular touches.
[148735.156] (II) touch_min = 0, touch_max = 2220
[148735.156] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad
(/dev/input/mouse1)
[148735.157] (**) ETPS/2 Elantech Touchpad: Applying InputClass "Multitouch
Touchpad"
[148735.157] (II) Using input driver 'mtrack' for 'ETPS/2 Elantech Touchpad'
[148735.157] (**) ETPS/2 Elantech Touchpad: always reports core events
[148735.157] (**) ETPS/2 Elantech Touchpad: always reports core events
[148735.157] (**) Option "config_info"
"udev:/sys/devices/platform/i8042/serio1/input/input7/mouse1"
[148735.157] (II) XINPUT: Adding extended input device "ETPS/2 Elantech
Touchpad" (type: TOUCHPAD, id 14)
[148735.157] (II) device control: init
[148735.157] (**) Option "Device" "/dev/input/mouse1"
[148735.157] (EE) mtrack: cannot configure device
[148735.157] (EE) Couldn't init device "ETPS/2 Elantech Touchpad"
[148735.157] (II) UnloadModule: "mtrack"
Did get this problem on a Trusty box.
** Affects: xserver-xorg-input-synaptics (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1305494
Title:
noticeable touchpad lag that feels like a low-pass for movements
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