jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link show wlan0
[sudo] jonas jelszava:       
2: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether ff:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev wlan down
Cannot find device "wlan"
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev wlan0 down
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev wlan0 address ff:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
RTNETLINK answers: Cannot assign requested address
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev phy1 down
Cannot find device "phy1"
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev pan1 down
[sudo] jonas jelszava:       
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo rfkill unblock wlan
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev wlan0 up
RTNETLINK answers: Cannot assign requested address
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link show wlan0
2: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether ff:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev pan1 down
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo rfkill unblock wlan
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link set dev wlan0 down
jonas@jonas-Visionbook-14Wr-Plus:~$ sudo ip link show wlan0
2: wlan0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether ff:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff