This happened again for me (when I was using Firefox), and switching to the linux console (terminal) (Ctrl-Alt-F1) and back (Ctrl-Alt-F7) did help. (Thanks for the hint!)
Each time I switch back to X, a message in the log appears:
[ 7699.679] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
It looks absolutely OK, no explanation for the cause of the error.
This happened again for me (when I was using Firefox), and switching to the linux console (terminal) (Ctrl-Alt-F1) and back (Ctrl-Alt-F7) did help. (Thanks for the hint!)
Each time I switch back to X, a message in the log appears:
[ 7699.679] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
It looks absolutely OK, no explanation for the cause of the error.