@Christian Can you check that xserver-xorg-input-synaptics is installed when using the livecd, please?
You can check it with the following command: apt-cache policy xserver-xorg-input-synaptics
@Christian xorg-input- synaptics is installed when using the livecd, please?
Can you check that xserver-
You can check it with the following command: xorg-input- synaptics
apt-cache policy xserver-