alors :
keb@Narsis:~$ lspci -nnk | grep 0280 -A3
01:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter [10ec:c821]
Subsystem: Hewlett-Packard Company RTL8821CE 802.11ac PCIe Wireless Network Adapter [103c:831a]
Kernel modules: 8821ce, rtl8821ce
keb@Narsis:~$
keb@Narsis:~$ lsmod | grep cfg80211
cfg80211 704512 0
keb@Narsis:~$
keb@Narsis:~$ rfkill list all
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
keb@Narsis:~$
keb@Narsis:~$ iwconfig
lo no wireless extensions.
usb0 no wireless extensions.
keb@Narsis:~$
keb@Narsis:~$ nmcli dev wifi
keb@Narsis:~$
voilà voilà