This ended up being a BIOS+OS interaction issue. When booting to Windows, it honored the Touchpad enable/disable button. Ubuntu doesn't. I had to boot into the BIOS, and then hit this button once for it to then be enabled again in Ubuntu.
** Changed in: xserver-xorg-input-synaptics (Ubuntu) Status: Triaged => Invalid -- 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/1568449 Title: [Toshiba Satellite S55-C5247] ETPS/2 Elantech Touchpad not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/1568449/+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