First solution :
We are going to change a value in a file. Change the value 128
in the flowing file to 200
(temporary), or what ever value suits you.
sudo nano /sys/devices/platform/i8042/serio1/serio2/sensitivity
Once you found values you are comfortable with, make the change permanent using an Upstart job:
Now: **Create a new udev rule :**
Now we need to apply the settings during the system start. Therefore, press Alt + F2, type
gksu gedit /etc/udev/rules.d/trackpoint.rules
and hit Enter (this will ask you for your password). Then paste the following:
SUBSYSTEM=="serio", DRIVERS=="psmouse", DEVPATH=="/sys/devices/platform/i8042/serio1/serio2", ATTR{sensitivity}="220", ATTR{speed}="110"
Save the file and either reboot or run the commands above:
sudo udevadm control --reload-rules
sudo udevadm trigger
2nd solution :
you can also type in terminal (my prefered solution) :
sudo apt install xserver-xorg-input-evdev && sudo apt purge xserver-xorg-input-libinput && sudo reboot
xinput
way : https://askubuntu.com/questions/205676/how-to-change-mouse-speed-sensitivity – Michal Przybylowicz Jul 08 '19 at 13:39