![从 12.04 升级到 14.04 后,wifi 无法使用](https://linux22.com/image/1046539/%E4%BB%8E%2012.04%20%E5%8D%87%E7%BA%A7%E5%88%B0%2014.04%20%E5%90%8E%EF%BC%8Cwifi%20%E6%97%A0%E6%B3%95%E4%BD%BF%E7%94%A8.png)
有线网络工作正常,只是没有 WiFi。
$ lspci -v | grep -iA7 network
0b:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01)
Subsystem: Dell Wireless 1395 WLAN Mini-Card
Flags: bus master, fast devsel, latency 0, IRQ 17
Memory at fe7fc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: b43-pci-bridge
$ lsmod | grep b43-pci-bridge
$ lsmod | grep b43
b43 387371 0
bcma 52096 1 b43
mac80211 626489 1 b43
cfg80211 484040 2 b43,mac80211
ssb 62379 1 b43
$ nm-tool
NetworkManager Tool
State: connected (global)
- Device: eth0 [Wired connection 1] -------------------------------------------
Type: Wired
Driver: sky2
State: connected
Default: yes
HW Address: 00:21:9B:ED:A6:84
Capabilities:
Carrier Detect: yes
Speed: 100 Mb/s
Wired Properties
Carrier: on
IPv4 Settings:
Address: 192.168.1.8
Prefix: 24 (255.255.255.0)
Gateway: 192.168.1.1
DNS: 192.168.1.1
答案1
请执行以下操作:
sudo apt-get purge b43-fwcutter firmware-b43-installer
sudo apt-get update
sudo apt-get install linux-firmware-nonfree
重启