Question: Trackpad two finger scrolling and right-click issue with Ubuntu 17.10 (i386, 64bit, GNOME 3.26.1) on a Lenovo T540p (the model with a Intel Core i5-4210M Haswell CPU etc)

Answer: 
Update for other ThinkPad users, as per the hard work done [here](https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722478), the workaround is as follows...

Edit the file `/etc/default/grub` and change the line:

```
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

```

to

```
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash psmouse.synaptics_intertouch=0"

```

then

```
sudo update-grub

```

and reboot.
About the two finger scrolling, try with **three fingers**, that worked out of the box for me on my Lenovo X1 Carbon 2015.