2014 年 10 月 14 日更新：整篇文章
情况（来自speedtest.net）：
我的笔记本内置 wifi 在特定路由器上最高可达 3.3 Mb/s 的网速。
其他电脑可以达到 20-40 Mb/s。
其中一台电脑也是这样，Ubuntu但驱动程序不同（iwl3945我记得）。
调试如下：
- speedtest.net 结果：http://www.speedtest.net/my-result/3832053617（
nm-tool以下） - 笔记本电脑甚至可以达到 50 Mb/s，但使用该路由器则不行；
- 内置 wifi
n= 3.3 Mb/s，临时 USB 适配器g= 15 Mb/s； - 对于路由器旁边的谜语笔记本电脑没有加速（更强的（100）网络实际上
nm-tool是由同一个路由器广播的，但由ISP管理，需要登录和通过）； - 将频道从自动 11 改为 1，对我的笔记本来说更稳定；
- 尝试了 5 GHz 网络，但我的笔记本电脑看不到它；
n因为这是一个团队网络，所以我无法禁用除标准之外的所有功能（不过应该尝试一下）；- 不依赖于与路由器的各种距离；
没试过：
- 不同的驱动程序（有吗？）；
对于设置、驱动程序或其他任何东西有什么想法吗？
lspci | grep -i“无线”
04:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
nm 工具- 距路由器 2 米
NetworkManager Tool
State: connected (global)
- Device: wlan0 [Agrosh] ------------------------------------------------------
Type: 802.11 WiFi
Driver: ath9k
State: connected
Default: yes
HW Address: 44:6D:57:7F:77:49
Capabilities:
Speed: 58 Mb/s
Wireless Properties
WEP Encryption: yes
WPA Encryption: yes
WPA2 Encryption: yes
Wireless Access Points (* = current AP)
UPC Wi-Free: Infra, 46:32:C8:34:40:69, Freq 2412 MHz, Rate 54 Mb/s, Strength 100 WPA2 Enterprise
UPC824107: Infra, 4C:72:B9:45:3A:FF, Freq 2412 MHz, Rate 54 Mb/s, Strength 52 WPA2
UPC Wi-Free: Infra, 4E:72:B9:45:3A:F1, Freq 2412 MHz, Rate 54 Mb/s, Strength 50 WPA2 Enterprise
DIRECT-AY-BRAVIA:Infra, 72:18:8B:D0:4B:4E, Freq 2412 MHz, Rate 54 Mb/s, Strength 49 WPA2
UPC1382728: Infra, 8C:04:FF:F4:77:CE, Freq 2412 MHz, Rate 54 Mb/s, Strength 39 WPA WPA2
UPC Wi-Free: Infra, FE:94:E3:11:EE:FB, Freq 2437 MHz, Rate 54 Mb/s, Strength 37 WPA2 Enterprise
UPC0041263: Infra, FC:94:E3:0B:66:B3, Freq 2442 MHz, Rate 54 Mb/s, Strength 32 WPA WPA2
UPC Wi-Free: Infra, FE:94:E3:0B:66:B5, Freq 2442 MHz, Rate 54 Mb/s, Strength 32 WPA2 Enterprise
UPC198160: Infra, 4C:72:B9:04:05:6D, Freq 2412 MHz, Rate 54 Mb/s, Strength 29 WPA2
UPC Wi-Free: Infra, 4E:72:B9:04:05:6F, Freq 2412 MHz, Rate 54 Mb/s, Strength 27 WPA2 Enterprise
UPC0041437: Infra, FC:94:E3:11:EE:F9, Freq 2437 MHz, Rate 54 Mb/s, Strength 27 WPA WPA2
UPC Wi-Free: Infra, 8E:04:FF:F4:77:C0, Freq 2412 MHz, Rate 54 Mb/s, Strength 22 WPA2 Enterprise
UPC Wi-Free: Infra, C6:27:95:77:D1:30, Freq 2437 MHz, Rate 54 Mb/s, Strength 17 WPA2 Enterprise
UPC0041704: Infra, 24:EC:99:E5:B8:C8, Freq 2442 MHz, Rate 54 Mb/s, Strength 17 WPA WPA2
Livebox-7149: Infra, 68:1A:B2:58:71:49, Freq 2437 MHz, Rate 54 Mb/s, Strength 15 WPA WPA2
UPC1816193: Infra, C4:27:95:77:D1:3E, Freq 2437 MHz, Rate 54 Mb/s, Strength 12 WPA WPA2
UPC Wi-Free: Infra, 26:EC:99:E5:B8:CA, Freq 2442 MHz, Rate 54 Mb/s, Strength 12 WPA2 Enterprise
UPC1373890: Infra, 8C:04:FF:80:AC:57, Freq 2462 MHz, Rate 54 Mb/s, Strength 9 WPA WPA2
Orange_FunSpot: Infra, 6E:1A:B2:58:71:49, Freq 2437 MHz, Rate 54 Mb/s, Strength 15
*Agrosh: Infra, 44:32:C8:34:40:67, Freq 2412 MHz, Rate 54 Mb/s, Strength 70 WPA WPA2
UPC Wi-Free: Infra, 06:7C:34:3D:CA:FB, Freq 2462 MHz, Rate 54 Mb/s, Strength 20 WPA WPA2 Enterprise
ZTE_904C: Infra, C8:64:C7:41:90:4C, Freq 2412 MHz, Rate 54 Mb/s, Strength 19 WPA
AHPN: Infra, F8:D1:11:93:57:0A, Freq 2412 MHz, Rate 54 Mb/s, Strength 14 WPA WPA2
Ako: Infra, 00:24:B2:45:44:68, Freq 2432 MHz, Rate 54 Mb/s, Strength 12 WPA2
ABBIURO: Infra, D8:5D:4C:A2:87:32, Freq 2412 MHz, Rate 54 Mb/s, Strength 14 WEP
michalina: Infra, 64:7C:34:3D:CA:FB, Freq 2462 MHz, Rate 54 Mb/s, Strength 19 WPA WPA2
DIRECT-hY-BRAVIA:Infra, 12:A0:96:D4:BA:22, Freq 2417 MHz, Rate 54 Mb/s, Strength 27 WPA2
IPv4 Settings:
Address: 192.168.0.10
Prefix: 24 (255.255.255.0)
Gateway: 192.168.0.1
DNS: 62.179.1.63
DNS: 62.179.1.62
- Device: eth0 -----------------------------------------------------------------
Type: Wired
Driver: r8169
State: unavailable
Default: no
HW Address: A0:B3:CC:C8:88:24
Capabilities:
Carrier Detect: yes
Wired Properties
Carrier: off