这有点奇怪。
路由器设置得很好，我可以从 Mac 和 2 部手机上看到它。它受 WEP 保护，没有隐藏或其他技巧，因为它是出厂时安装的。我的 Ubuntu 是 HP Pavillion DV1000 上的 10.04。
当我尝试从 Ubuntu 连接时，它确实可以看到其他网络（10 个或更多），但看不到我自己的网络。我尝试过重启、ifconfig up/down、rfkill block/unblock wifi、安装 b43-fwcutter，但都不起作用。
我会很感激任何建议。谢谢
$ sudo lshw -C network
*-network
description: Wireless interface
product: PRO/Wireless 3945ABG [Golan] Network Connection
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 02
serial: 00:19:d2:0c:a6:bf
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwl3945 latency=0 multicast=yes wireless=IEEE 802.11abg
resources: irq:27 memory:d6000000-d6000fff
*-network
description: Ethernet interface
product: PRO/100 VE Network Connection
vendor: Intel Corporation
physical id: 8
bus info: pci@0000:05:08.0
logical name: eth0
version: 02
serial: 00:16:36:4e:9b:60
size: 100MB/s
capacity: 100MB/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=e100 driverversion=3.5.24-k2-NAPI duplex=full firmware=N/A ip=10.0.0.1 latency=64 link=yes maxlatency=56 mingnt=8 multicast=yes port=MII speed=100MB/s
resources: irq:20 memory:d8000000-d8000fff ioport:4000(size=64)
$ sudo iwlist scan
lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
wlan0 Scan completed :
Cell 01 - Address: 00:21:29:C7:5C:82
Channel:6
Frequency:2.437 GHz (Channel 6)
Quality=39/70 Signal level=-71 dBm
Encryption key:on
ESSID:"Alveveien227"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s
Mode:Master
Extra:tsf=0000003cfab679b1
Extra: Last beacon: 1588ms ago
IE: Unknown: 000C416C7665766569656E323237
IE: Unknown: 010882848B962430486C
IE: Unknown: 030106
IE: Unknown: 2A0100
IE: Unknown: 2F0100
IE: Unknown: 32040C121860
IE: Unknown: 2D1A0C181AFFFF000000000000000000000000000000000000000000
IE: Unknown: 3D1606001300000000000000000000000000000000000000
IE: Unknown: DD930050F204104A00011010440001021041000100103B00010310470010109070C00000109070C0004000000000102100244C696E6B7379732C2041204469766973696F6E206F6620436973636F2053797374656D73102300075752543631304E1024000876312E30302E30301042000234321054000800060050F2040001101100075752543631304E100800020088103C000103
IE: Unknown: DD090010180202F0050000
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (1) : TKIP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
IE: Unknown: DD1E00904C330C181AFFFF000000000000000000000000000000000000000000
IE: Unknown: DD1A00904C3406001300000000000000000000000000000000000000
Cell 02 - Address: 34:21:09:02:FF:A0
Channel:9
Frequency:2.452 GHz (Channel 9)
Quality=22/70 Signal level=-88 dBm
Encryption key:on
ESSID:"Kontoret 2"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
18 Mb/s; 36 Mb/s; 54 Mb/s
Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
Mode:Unknown/bug
Extra:tsf=0000015573e86ed2
Extra: Last beacon: 1496ms ago
IE: Unknown: 000A4B6F6E746F7265742032
IE: Unknown: 010882848B961224486C
IE: Unknown: 030109
IE: Unknown: 32040C183060
IE: Unknown: 33082001020304050607
IE: Unknown: 33082105060708090A0B
IE: Unknown: DD270050F204104A0001101044000102104700102880288028801880A88034210902FFA0103C000101
IE: Unknown: 050400030080
IE: Unknown: 2A0104
IE: Unknown: 2D1AEE1117FFFF0000010000000000000000000000000C0000000000
IE: Unknown: 3D1609070700000000000000000000000000000000000000
IE: Unknown: 7F0101
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
IE: Unknown: 0B0505002D127A
IE: Unknown: DD1E00904C33EE1117FFFF0000010000000000000000000000000C0000000000
IE: Unknown: DD1A00904C3409070700000000000000000000000000000000000000
IE: Unknown: DD07000C4304000000
答案1
查看可用无线网络你可能想这样做：
sudo iwlist scan
你lshw -C network已经列出网络接口及其当前配置。
答案2
修复。看来这个 wifi 板不支持我的路由器自动提供的通道 13。强制将其设置为支持的通道 (10) 解决了这个问题。
$ sudo iwlist channel
wlan0 24 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Channel 36 : 5.18 GHz
Channel 40 : 5.2 GHz
Channel 44 : 5.22 GHz
Channel 48 : 5.24 GHz
Channel 52 : 5.26 GHz
Channel 56 : 5.28 GHz
Channel 60 : 5.3 GHz
Channel 64 : 5.32 GHz
Channel 149 : 5.745 GHz
Channel 153 : 5.765 GHz
Channel 157 : 5.785 GHz
Channel 161 : 5.805 GHz
Channel 165 : 5.825 GHz
Current Frequency=2.457 GHz (Channel 10)
谜题解开了。没有黑魔法，只是我知识不足。谢谢大家。