오래된 노트북에 Ubuntu 16.04를 설치했지만 무선으로 연결할 수 없습니다
sudo ifconfig wlp3s0 up
mm@6830s:~$ sudo iwlist wlp3s0 scan
wlp3s0 Interface doesn't support scanning : Invalid argument
모든 게 괜찮은 것 같아
sudo lshw -class network
*-network
description: Wireless interface
product: BCM4312 802.11b/g LP-PHY
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 01
serial: 00:21:00:b2:16:48
width: 64 bits
내 인터페이스
cat /etc/network/interfaces
# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback
auto ens5
iface ens5 inet dhcp
auto wlp3s0
iface wlp3s0 inet dhcp
만약 내가 간다면
sudo iw dev wlp3s0 scan
command failed: Invalid argument (-22)
이 문제를 어떻게 해결하나요?