Ubuntu
xserver-xorg-input-synaptics package

How to remove touchpad lag?

Asked by PeterPall on 2014-03-20

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.
I know that when using the OS from M$ you can actually activate and deactivate this filter that makes me always miss the button I want to click on.

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"
[

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu xserver-xorg-input-synaptics Edit question
Assignee:
No assignee Edit question
Solved by:
PeterPall
Solved:
2014-04-10
Last query:
2014-04-10
Last reply:
2014-04-10
actionparsnip (andrew-woodhead666) said : #1

what is the output of:

lsb_release -a; uname -a

Thanks

actionparsnip (andrew-woodhead666) said : #2

Also the output of:

sudo dmidecode -t 1

Thanks

Launchpad Janitor (janitor) said : #3

This question was expired because it remained in the 'Needs information' state without activity for the last 15 days.

PeterPall (peterpall) said : #4

Arrgh! Didn't see the notification mail. Hope you're still on the case, though: Normally if I fail to find a helping answer - you most certainly will.

gunter@marius:~$ uname -a
Linux marius 3.13.0-23-lowlatency #45-Ubuntu SMP PREEMPT Fri Apr 4 07:16:25 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

gunter@marius:~$ lsb_release -a
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:cxx-3.0-amd64:cxx-3.0-noarch:cxx-3.1-amd64:cxx-3.1-noarch:cxx-3.2-amd64:cxx-3.2-noarch:cxx-4.0-amd64:cxx-4.0-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch:desktop-4.0-amd64:desktop-4.0-noarch:desktop-4.1-amd64:desktop-4.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.0-amd64:graphics-3.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch:graphics-4.1-amd64:graphics-4.1-noarch:languages-3.2-amd64:languages-3.2-noarch:languages-4.0-amd64:languages-4.0-noarch:languages-4.1-amd64:languages-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-3.2-amd64:printing-3.2-noarch:printing-4.0-amd64:printing-4.0-noarch:printing-4.1-amd64:printing-4.1-noarch:qt4-3.1-amd64:qt4-3.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu Trusty Tahr (development branch)
Release: 14.04
Codename: trusty

gunter@marius:~$ sudo dmidecode -t 1
# dmidecode 2.12
SMBIOS 2.7 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
 Manufacturer: Acer
 Product Name: Aspire S7-391
 Version: V2.09
 Serial Number: NXM3EEG005243098A22000
 UUID: 7BCC916E-772A-3C44-9F12-4084131DEC43
 Wake-up Type: Power Switch
 SKU Number: Aspire S7-391_0747_2.09
 Family: ChiefRiver System

actionparsnip (andrew-woodhead666) said : #5

I suggest you report a bug. Trusty is not ready and not stable.

PeterPall (peterpall) said : #6

Thanks a lot!

Created Bug #1305494. Did hope I somehow missed a configuration option. You never know...