Pierre: please install the latest updates (especially xserver-xorg-input-synaptics). Do you still get those crashes? If yes, please attach /var/log/Xorg.0.log.old and output of 'dmesg > dmesg.txt' to this bug.
Pierre: please install the latest updates (especially xserver- xorg-input- synaptics) . Do you still get those crashes? If yes, please attach /var/log/ Xorg.0. log.old and output of 'dmesg > dmesg.txt' to this bug.