Eu tenho um laptop com debian 12 e o Realtek Ethernet Controller consome cerca de 10W de acordo com o powertop:
Power est. Usage Events/s Category Description
11.9 W 0.0 pkts/s Device Network interface: enp4s0 (r8168)
92.7 mW 97.5 ms/s 191.0 Process [PID 35665] /usr/lib/xorg/Xorg vt3 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none -noreset -ke
84.2 mW 88.6 ms/s 15.4 Process [PID 36881] /usr/libexec/gnome-terminal-server
O consumo de energia acontece mesmo que o dispositivo esteja desligado:
$ ip a
2: enp4s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
link/ether a8:3e:43:5d:a5:1a brd ff:ff:ff:ff:ff:ff
Existe alguma maneira de desativar completamente este dispositivo ou pelo menos reduzir o consumo de energia?
Alguns diagnósticos adicionais:
$ lspci | grep -i "Ethernet"
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
$ nmcli device show enp4s0
GENERAL.DEVICE: enp4s0
GENERAL.TYPE: ethernet
GENERAL.HWADDR: A8:3E:43:5D:A5:1A
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.CONNECTION: --
GENERAL.CON-PATH: --
WIRED-PROPERTIES.CARRIER: off
IP4.GATEWAY: --
IP6.GATEWAY: --