The folder 30-touchpad.conf exists, but 30-touchpad.conf is a file. You should make it using a root-accessed text editor such as sudo mousepad /etc/X11/xorg.conf.d/30-touchpad.conf. Mousepad is a text editor you can use, but any editor works.
The folder 30-touchpad.conf exists, but 30-touchpad.conf is a file. You should make it using a root-accessed text editor such as sudo mousepad /etc/X11/xorg.conf.d/30-touchpad.conf. Mousepad is a text editor you can use, but any editor works.