Peut être essayer un truc se basant la dessus https://wiki.debian.org/SimplePowerSave
A mettre dans /etc/pm/power.d/ as /etc/pm/power.d/power if on_ac_power; then # Start AC powered settings --------------------------------------------# # Ta config # End AC powered settings ----------------------------------------------# else # Start battery powered settings ---------------------------------------# echo 100 > /proc/acpi/video/IGFX/LCD/brightness # End battery powered settings -----------------------------------------# fi - - -