This worked for me, thank you!
Before I would never get a Touchpad tab in settings but it worked. It was just 4finger middle click and 3finger right click. Odd
Originally Posted by ryszka3
The problem is with the ubuntu patches against xserver-xorg-input-synaptics package.
The solution to the problem is simple - just replace the ubuntu-provided package with one without those patches.
Download the appropriate Debian package from this site: (choose your architecture, either i386 or amd64)
Then remove the original package from your system and replace it with the one downloaded.
Reboot the system and 3-finger tapping should be working again.
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