Ubuntu中文论坛

我配置的步骤如下:
sudo chmod 777 /proc/acpi/acer/wireless
sudo echo 1 > /proc/acpi/acer/wireless #打开acer无线网卡开关.
＃这一步之后,无线网卡指示灯基本是长明状态.

sudo iwlist wlan0 scan #列出区域内的无线网络.
#搜出了若干无线信号.也列出了我的无线路由,名为dlink

sudo iwconfig wlan0 essid "dlink" key s:password #连接AP.
#iwconfig后,能够显示如下无线网卡信息:
wlan0 IEEE 802.11g ESSID:"dlink"
Mode:Managed Frequency:2.417 GHz Access Point: 00:1E:58:8A:E2:66
Tx-Power=27 dBm
Retry min limit:7 RTS thr:off Fragment thr=2346 B
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

sudo ifconfig wlan0 192.168.0.101 up #启用无线网卡.
＃ifconfig wlan0的结果:
wlan0 Link encap:Ethernet HWaddr 00:0e:9b:d5:22:8a
inet addr:192.168.0.101 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)


ip等信息斗殴了,按理说应该成功了,但ping网关192.168.0.1 还是提示 From 192.168.0.101 icmp_seq=1 Destination Host Unreachable

难道缺少什么步骤吗?

我用dhcp方式获取ip,结果失败.
sudo dhclient wlan0

:
Internet Systems Consortium DHCP Client V3.0.6
Copyright 2004-2007 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

wmaster0: unknown hardware address type 801
wmaster0: unknown hardware address type 801
Listening on LPF/wlan0/00:0e:9b:d5:22:8a
Sending on LPF/wlan0/00:0e:9b:d5:22:8a
Sending on Socket/fallback
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 2
No DHCPOFFERS received.
No working leases in persistent database - sleeping.

sudo iwlist wlan0 scan的结果是:
Cell 01 - Address: 00:1E:58:8A:E2:66
ESSID:"dlink"
Mode:Master
Channel:2
Frequency:2.417 GHz (Channel 2)
Quality=78/100 Signal level=-16 dBm Noise level=-72 dBm
Encryption key:on
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Extra:tsf=000000f0fb9f9eba

我在Debian5.0测试版本中也上无法使用.

我问题现象和你一样，你去看看是否可以ping通网关但是无法ping通如：google.cn这样的域名，有可能是域名解析的问题，查查DNS，采取一个外部的可用的DNS，不要用网关的。另外接入某essid在采取那种密钥那个地方也要选正确，是16进制还是ascii，是wap128还是64什么的，我记不得了，打开roaming mode，就可以选择，不需要在命令行那么麻烦。
你可以搜索我的帖子看看。