After the upgrade to 22.04 I had problems with the touchpad, I could see the settings but the touchpad was not responding. After a few commands to the terminal found on the web, the situation has reversed,…now the touchpad works but I no longer see the setting, and this bothers me, also because vertical scrolling is not natural as the one I set for the mouse. How can I restore the settings menu? Thanks
Would be useful to know what information you used.
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Hi Foss, thanks for reply.
Below you have the chronological list of everything I tried, … without really understanding what I did 
sudo apt install --reinstall xserver-xorg-input-synaptics
sudo apt update
sudo apt install xserver-xorg-input-synaptics
sudo nano /etc/default/grub
sudo update-grub
sudo shutdown -r now
dpkg -l | grep synaptic
sudo apt install xserver-xorg-input-synaptics
synclient TouchpadOff=0
sudo nano /usr/share/X11/xorg.conf.d/70-synaptics.conf
sudo apt install inxi
inxi -Fz
sudo apt install inxi
synclient -l
/usr/share/X11/xorg.conf.d/50-synaptics.conf
/etc/X11/xorg.conf.d/50-synaptics.conf
/etc/X11/xorg.conf.d/
cd /etc/X11/xorg.conf.d/
gedit
cat /proc/bus/input/devices
xinput list
xserver-xorg-input-libinput
xserver-xorg-input-synaptics.
sudo su -c “apt-get update”
sudo su -c “dpkg --configure -a”
sudo su -c “apt-get -f install”
sudo apt-get update
sudo apt-get upgrade-y
xinput list
gedit
cat /proc/bus/input/devices
xinput list
sudo apt-get install xserver-xorg-input-libinput-hwe-16.04 libinput-tools xorg-input-abi-24
sudo gedit /usr/share/X11/xorg.conf.d/*libinput.conf
XInput-list-devices
sudo xinput-list-devices
sudo apt-get install --reinstall mate-mouse-properties