Comment 153 for bug 296610

Why do you want to disable the touchpad? Is it getting in your way of typing? Or is it due to the current problems that Sebastian's patch tries to resolve but it's not in Ubuntu's kernel yet? For the former, I recommend looking into "syndaemon" program. For the latter adding "option psmouse proto=exps" will force the touchpad into PS/2 compatibility mode, which is better than constantly losing sync (that assumes that psmouse is a module; for built-in ass psmouse.proto=exps to the kernel command line).