帮助。
simon@simon-Latitude-D630:~$ sudo lshw -C network
*-network UNCLAIMED
description: Network controller
product: BCM4311 802.11a/b/g
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:0c:00.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: latency=0
resources: memory:fe8fc000-fe8fffff
*-network
description: Ethernet interface
product: NetXtreme BCM5755M Gigabit Ethernet PCI Express
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:09:00.0
logical name: eth0
version: 02
serial: 00:1c:23:24:77:ba
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=3.123 duplex=full firmware=5755m-v3.29 ip=10.1.1.13 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
resources: irq:45 memory:fe7f0000-fe7fffff
答案1
登录 ubuntu 程序中心，搜索 b43 查找
firmware-b43-installer 并安装。