I recently installed laptop-mode-tools package under the kernel26thinkpad kernel. It works, so long as 'works' means 'always active'. Even though I am not on battery power, laptop-mode is both enabled and active. Moreover, I cannot control this through the tool laptop_mode. For example, the command:
Laptop mode enabled, active [unchanged].
In fact, all commands (including with 'force') seem to solicit the same response with the exception of 'status'.