Open
/usr/share/themes/_THEME_/gtk-2.0/gtkrc
find
GtkScrollbar ::slider-width
Download the BIOS update bootable CD image from
lenovo's website.
I downloaded version 2.33-1.16 and the file name was giuj20us.iso
If the link I copied above is broken, try googling for
BIOS Update Bootable CD x240 site:lenovo.com
lsusb
lists the fingerprint reader in the x240 as follows:
Bus 002 Device 003: ID 138a:0017 Validity Sensors, Inc.
There exists experimental driver support for this in a fork of libfprint for vfs5011 sensors, however you'll need to compile the driver yourself. To get the fingerprint sensor to work for lightdm login, su etc, follow these steps.
With ubuntu 15.10, full clickpad support is provided by xserver-xorg-input-libinput. No further configuration needed. Tested with a T440s. (According to this)