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I installed Ubuntu 14.04 in my new laptop (Lenovo Z50-70).

Unfortunately, the touchpad is not working well. Without any modifications/installs, just left and right click buttons are working (no scroll).

After doing this: Cannot use twofinger on lenovo z5070 touchpad ubuntu 14.04

My right click button has stopped working and scrolling is now working well.

How can I have my touchpad (left and right click buttons and scroll) working perfectly?

Thank you !

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Follow this instructions on the following link about the synaptic touch pad drivers. As most of the laptops ships with the synaptic touch pads.

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Touchpad driver for g50-70

Download the file and then on terminal one by one line:

sudo dkms ldtarball psmouse-elantech-x551c-G50-70.tar.gz

sudo dkms install -m psmouse -v elantech-x551c-G50-70

sudo rmmod psmouse

sudo modprobe psmouse

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