# Power
sys-power/powertop

# Thermal
sys-power/thermald

# Wifi
net-wireless/iw
net-wireless/wireless-tools
net-wireless/wpa_supplicant
net-wireless/wavemon

# Bluetooth
net-wireless/bluez

# i2c
sys-apps/i2c-tools

# Backlight (at least on intel)
sys-power/acpilight