Looks like an intel driver crash; however can you also say exactly which version of xserver-xorg-input-synaptics you have by giving us the output of :
dpkg -l xserver-xorg-input-synaptics because I wonder if it's actually bug 774978 Dave ** Package changed: unity (Ubuntu) => xserver-xorg-video-intel (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/803926 Title: Unity/Xorg crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/803926/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp