
My computer is a Dell Inspirion 5000 2-in-1, and for instance the touchpad on the screen is perfectly working, while I don't have any control on its brightness (the F6 and F7 are not working and there is no settings where I can set the brightness). Is that possible? Should I try with a fresh installation of Ubuntu? I installed Ubuntu 20.04. Im having a problem where whenever I two-finger scroll using the. Reading here and there I understood that it might be a kernel issue. I received a Dell Latitude 3340 (from 2015 I believe) with Windows 10 Pro pre-installed.

I also tried with synclient, which is instead always replying with Couldn't find synaptics properties. Libinput Scroll Method Enabled Default (260): 0, 0, 1 Libinput Scroll Method Enabled (259): 0, 0, 1 Libinput Scroll Methods Available (258): 0, 0, 1

In the following you can see the section regarding the scroll methods of the output of the command xinput -list-props 13, Device 'PS/2 Generic Mouse': I would like to be able to use the twofinger scrolling on my touchpad, but xinput is not detecting this method, but only the on-button method, which instead I don't have.
