I just dissasembled my computer to check that it wasn't a physical hardware failure... and it was. I'm sorry for bothering people. I just reconnected a lose cable and the touchpad started working again.
Close this bug... -- Touchpad stopped working after update https://launchpad.net/bugs/64019 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs