i also encountered this problem, the last time i installed it was synaptic, so i remove synaptic and install it back again to see if it was from this package. i think the bug was from synaptic, it might be the best solution but it work for the meantime.
jhano@john:~$ gsettings list-recursively org.gnome.settings-daemon.peripherals.touchpad org.gnome.settings-daemon.peripherals.touchpad disable-while-typing true org.gnome.settings-daemon.peripherals.touchpad horiz-scroll-enabled false org.gnome.settings-daemon.peripherals.touchpad left-handed 'mouse' org.gnome.settings-daemon.peripherals.touchpad motion-acceleration -1.0 org.gnome.settings-daemon.peripherals.touchpad motion-threshold -1 org.gnome.settings-daemon.peripherals.touchpad scroll-method 'edge-scrolling' org.gnome.settings-daemon.peripherals.touchpad tap-to-click true org.gnome.settings-daemon.peripherals.touchpad touchpad-enabled true jhano@john:~$ ** Attachment added: "lsb_release" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/894486/+attachment/2665881/+files/gsettings.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/894486 Title: After a clean install the touchpad doesn't work untill rebooting xserver or pc To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/894486/+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