2. Initially, the mouse cannot be found in xorg.conf, to add one (full instruction can be found here)

2.1 Install endev

2.2 Copy physical location of the mouse from (cat /proc/bus/input/devices)

2.3 Make the udev rule

2.3.1 sudo kate /etc/udev/rules.d/19-local.rules

2.3.2 In the file, type KERNEL==”event[0-9]*”, SYSFS{../name}==”Logitech USB Receiver”, SYSFS{../phys}==”message that you find after Phys of your mouse“, NAME=”input/event9”

2.4 xorg.conf

2.4.1 Add

Section “InputDevice”

Identifier “MX Air”

Driver “evdev”

Option “Device” “/dev/input/event9”

Option “Protocol” “auto”

Option “CorePointer”Section “ServerLayout”

EndSection

2.4.2 Add InputDevice “MX Air” in Section “ServerLayout”

The key binding can be viewed and modified using xinput get(or set)-button-map your_device_id 1 2 3 …

The 4th button corresponds to the scroll up button and the 5th, the scroll down one.

To enable the middle button function (which I assigned to, under Windows, the scroll down button), we can simply apply

xinput get(or set)-button-map your_device_id 1 2 3 4 2

though at the cost of completely losing the ability of scrolling with your MX Air.

Type sudo btnx-config to start the GUI.

…

(identify the buttons, modify button properties)

…

However, this will cause yet another problem:

Now the scroll down button also acts as a middle button, which means, when you try scrolling down in a document for example, linux will try to paste what is stored in the clipboard each time a srolling down event takes place.

Although one can ease the problem by adding a repeat delay (in btnx), to fully get rid of it needs one to

either

completely disable the paste-with-middle-button function when running certain applications

or

come up with something new…