我刚刚在一台旧的 HP G5000 上安装了 Ubuntu 12.04
没有 WiFi，通过以太网电缆连接互联网的速度非常慢，似乎不超过几 Kb/s，例如浏览器可以下载页面标题，但不能下载其他内容。以太网电缆与其他笔记本电脑配合使用效果很好，在安装 Ubuntu 前 1 小时安装 Windows 时，它与同一台笔记本电脑配合使用效果很好。我是 Linux 新手。在终端中执行了几行在其他类似主题中使用过的代码，但我对这一切的含义了解甚少。
inese@inese-HP:~$ ifconfig
eth0 Link encap:Ethernet HWaddr 00:1b:38:2f:04:8d
inet addr:192.168.2.125 Bcast:192.168.2.255 Mask:255.255.255.0
inet6 addr: fe80::21b:38ff:fe2f:48d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:122 errors:68 dropped:0 overruns:0 frame:0
TX packets:186 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:33749 (33.7 KB) TX bytes:26731 (26.7 KB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:28 errors:0 dropped:0 overruns:0 frame:0
TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3404 (3.4 KB) TX bytes:3404 (3.4 KB)
inese@inese-HP:~$ netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 192.168.2.1 0.0.0.0 UG 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
inese@inese-HP:~$ ping -c 4 google.com
PING google.com (195.122.16.29) 56(84) bytes of data.
64 bytes from cache.google.com (195.122.16.29): icmp_req=1 ttl=60 time=23.4 ms
64 bytes from cache.google.com (195.122.16.29): icmp_req=2 ttl=60 time=23.5 ms
64 bytes from cache.google.com (195.122.16.29): icmp_req=3 ttl=60 time=22.0 ms
64 bytes from cache.google.com (195.122.16.29): icmp_req=4 ttl=60 time=23.6 ms
--- google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 22.043/23.155/23.650/0.656 ms
inese@inese-HP:~$ sudo lshw -c network
*-network
description: Network controller
product: BCM4311 802.11b/g WLAN
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:06:00.0
version: 01
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=b43-pci-bridge latency=0
resources: irq:18 memory:40400000-40403fff
*-network
description: Ethernet interface
product: RTL-8139/8139C/8139C+
vendor: Realtek Semiconductor Co., Ltd.
physical id: 8
bus info: pci@0000:08:08.0
logical name: eth0
version: 10
serial: 00:1b:38:2f:04:8d
size: 100Mbit/s
capacity: 100Mbit/s
width: 32 bits
clock: 33MHz
capabilities: pm bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=8139too driverversion=0.9.28 duplex=full ip=192.168.2.125 latency=32 link=yes maxlatency=64 mingnt=32 multicast=yes port=MII speed=100Mbit/s
resources: irq:16 ioport:2000(size=256) memory:d0100000-d01000ff
inese@inese-HP:~$ lspci -nnk | grep -ia2 net
Subsystem: Hewlett-Packard Company Device [103c:30a5]
Kernel modules: i2c-i801
06:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)
Subsystem: Hewlett-Packard Company BCM4311 802.11b/g Wireless LAN Controller [103c:1364]
Kernel driver in use: b43-pci-bridge
Kernel modules: ssb
08:08.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ [10ec:8139] (rev 10)
Subsystem: Hewlett-Packard Company Device [103c:30a5]
Kernel driver in use: 8139too
谢谢！Atis
答案1
您的无线设备需要固件。请打开终端并执行以下操作：
sudo apt-get install linux-firmware-nonfree
重新启动后，你的无线网络就应该可以正常工作了。