Touchpad does not work on Acer Aspire

The solution: add i8042.nopnp to the kernel command line. To do this:

sudoedit /etc/default/grub

and add:

GRUB_CMDLINE_LINUX="i8042.nopnp"

If there's already a line with GRUB_CMDLINE_LINUX=…, add i8042.nopnp inside the quotes, separated from any other word within the quotes by a space, e.g.

GRUB_CMDLINE_LINUX="some-other=option i8042.nopnp"

Then run

sudo update-grub

and reboot. Hope it works, it worked for me!

For acer laptops, After installing drivers if it's still not working.

then you have To re-enable your touchpad: On your laptop keyboard, press the Fn key and the F6 or F7 key (the function key with a touchpad icon on it) at the same time. Then check to see if you're able to use your touchpad.

So try clicking or swiping after pressing the keys mentioned, to see it's enabled.

Source: https://www.drivereasy.com/knowledge/acer-laptop-touchpad-not-working-solved/

Menu -> Administration -> Update Manager -> (Install Updates -- Ensure you Update the kernel) -> reboot -> Fn - F7

Inspired by : http://www.dedoimedo.com/computers/linux-mint-touchpad-fix.html

Linux Mint Serena - Aspire V3-575-5OTD (Updated to kernel v4.4.0-62)