Leia este esclarecimento do autor do laptop-mode-tools :
What is the relationship between the Ubuntu package "laptop-mode" and the Debian package "laptop-mode-tools"?
There is a big thread about this on ubuntuforums, http://ubuntuforums.org/showthread.php?t=36976. Ubuntu used to have a rather outdated package for controlling laptop mode, based on the aforementioned kernel documentation script. Laptop mode tools basically is a much more recent version of the same code. Ubuntu has switched to laptop-mode-tools somewhere in 2006.
Estou executando o Ubuntu 9.04, e o laptop-mode-tools é instalado por padrão no meu sistema, não ubuntu-laptop-mode .