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# Power sys-apps/hdparm sys-power/acpid sys-power/pm-utils sys-power/powertop # Wifi net-wireless/iw net-wireless/wireless-tools net-wireless/wpa_supplicant net-wireless/hostapd net-wireless/wavemon # Bluetooth net-wireless/bluez #app-mobilephone/obexftp # i2c sys-apps/i2c-tools # Backlight (at least on intel) sys-power/acpilight