uname -a
Linux E5400 4.15.0-10-generic #11-Ubuntu SMP Tue Feb 13 18:23:35 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
sudo lspci -knn | grep -A5 Wireless
Subsystem: Dell Wireless 1397 WLAN Mini-Card [1028:000c]
Kernel driver in use: wl
Kernel modules: wl
sudo lshw -numeric -class network
*-network
description: Wireless interface
product: BCM4312 802.11b/g LP-PHY [14E4:4315]
vendor: Broadcom Limited [14E4]
physical id: 0
bus info: pci@0000:0c:00.0
logical name: wlp12s0
version: 01
serial: 00:26:5e:44:4b:d0
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11
resources: irq:17 memory:f69fc000-f69fffff
*-network
description: Ethernet interface
product: NetXtreme BCM5761e Gigabit Ethernet PCIe [14E4:1680]
vendor: Broadcom Limited [14E4]
physical id: 0
bus info: pci@0000:09:00.0
logical name: enp9s0
version: 10
serial: 00:25:64:41:aa:40
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm vpd msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=tg3 driverversion=3.137 duplex=full firmware=5761e-v3.60 ip=192.168.1.107 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:25 memory:f68e0000-f68effff memory:f68f0000-f68fffff
sudo ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp9s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:25:64:41:aa:40 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.107/24 brd 192.168.1.255 scope global dynamic noprefixroute enp9s0
valid_lft 85625sec preferred_lft 85625sec
inet6 fe80::a5c9:8d72:bf7c:6bdc/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: wlp12s0: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state DORMANT group default qlen 1000
link/ether 00:26:5e:44:4b:d0 brd ff:ff:ff:ff:ff:ff
sudo ip route show
default via 192.168.1.1 dev enp9s0 proto dhcp metric 100
169.254.0.0/16 dev enp9s0 scope link metric 1000
192.168.1.0/24 dev enp9s0 proto kernel scope link src 192.168.1.107 metric 100
sudo rfkill list all
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: dell-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
sudo nmcli dev status
DEVICE TYPE STATE CONNECTION
enp9s0 ethernet 已连接 有线连接 1
wlp12s0 wifi 已断开 --
lo loopback 未托管 --
sudo dhclient -v
Internet Systems Consortium DHCP Client 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/
Listening on LPF/wlp12s0/00:26:5e:44:4b:d0
Sending on LPF/wlp12s0/00:26:5e:44:4b:d0
Listening on LPF/enp9s0/00:25:64:41:aa:40
Sending on LPF/enp9s0/00:25:64:41:aa:40
Sending on Socket/fallback
DHCPDISCOVER on wlp12s0 to 255.255.255.255 port 67 interval 3 (xid=0x66a28543)
DHCPREQUEST of 192.168.1.104 on enp9s0 to 255.255.255.255 port 67 (xid=0x61936eb5)
DHCPACK of 192.168.1.104 from 192.168.1.1
RTNETLINK answers: File exists
bound to 192.168.1.104 -- renewal in 37026 seconds.
sudo iwlist scan
没有我家的无线网,之前ubuntu16.04,ubuntu17.10均可搜到连接上
sudo dkms status
bcmwl, 6.30.223.271+bdcom, 4.15.0-10-generic, x86_64: installed