Cannot use twofinger gesture on lenovo touchpad ubuntu 14.04

Question

Cannot use twofinger on lenovo z5070 touchpad ubuntu 14.04.

I also tried

twofinger scroll on lenovo g50

ALPS touchpad detected as PS/2, corrected with psmouse-dkms-alpsv7 but reset after reboot

Ubuntu 14.04 - Lenovo Ultrabook Touchpad Drag not working

pointing devices

when I use command synclent

It return "Couldn't find synaptics properties. No synaptics driver loaded? "

I also tried to reinstall xserver-xorg-input-synaptics

sudo apt-get purge xserver-xorg-input-synaptics sudo apt-get install xserver-xorg-input-synaptics

Answer 1

My solution.

cat /proc/bus/input/devices

if you found something like this

N: Name="ETPS/2 Elantech Touchpad" then do the next procedure

apt-get install dkms

if cannot access dkms. try

export PATH=$PATH:/usr/local/sbin

Step 1: Download the following dkms package

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1166442/+attachment/3941591/+files/psmouse-elantech-x551c.tar.gz

Step 2: Run the following commands in the download directory (or adjust the paths accordingly):

sudo dkms ldtarball psmouse-elantech-x551c.tar.gz

sudo dkms install -m psmouse -v elantech-x551c

sudo rmmod psmouse

sudo modprobe psmouse

ref.

https://superuser.com/questions/721417/elantech-touchpad-recognized-as-ps-2-mouse-ubuntu-13-10

http://www.evilcodingmonkey.com/2014/01/23/ubuntu-activate-multi-touch-on-elantech/

https://bbs.archlinux.org/viewtopic.php?id=157091

https://superuser.com/questions/595818/add-usr-local-sbin-to-the-path-of-a-user

http://www.evilcodingmonkey.com/2014/01/23/ubuntu-activate-multi-touch-on-elantech/