Hello. I just upgraded from 20.04 to 20.10 and I have an issue with touchpad. I have an old notebook (Toshiba Portege M750) and I'm satisfied with Ubuntu Mate on it. The notebook has an older touchpad, which doesn't support multi-finger gestures. The hw buttons are too noisy for me, so I use tap-to-click and the right-bottom corner works as right-click. After some Mate version (I think it was 19.10) the corner right click stopped working. I figured out that the problem was that Mate used xserver-xorg-input-libinput as default input handler for touchpad and not xserver-xorg-input-synaptics. So the solution was to install synaptics and the corner-right-click worked as before. This was until update to 20.10. After the update the mouse pointer froze and was not usable. I uninstalled (purged) the xserver-xorg-input-synaptics package and after reboot the touchpad worked again. But without the corner-right-click option. Some suggestions on the net were to use gnome-tweak-tool, buth this method doesn't work on Ubuntu Mate.
Is there any way to configure/enable corner-right-click in Ubuntu Mate (some gsettings?), or through libinput, or some other way to enable the corner-right-click feature?
Thanks for answers and suggestions.