16.04 wifi问题 ThinkPad 13

16.04 wifi问题 ThinkPad 13

我家里的 wifi 运行正常。iwconfig家里的输出为:

wlp3s0    IEEE 802.11abgn  ESSID:"WiFi4 AH"  
          Mode:Managed  Frequency:2.432 GHz  Access Point: AC:86:74:1D:51:4A   
          Bit Rate=24 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=53/70  Signal level=-57 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:80   Missed beacon:0

lo        no wireless extensions.

enp0s31f6  no wireless extensions.

然而,当我上大学时,我很难上网。它说我已连接,但我无法在浏览器上加载任何内容。如果我四处走动,我通常可以找到一个可以连接的地方,但我收到的信号似乎比其他地方弱,因为使用 MBP 和我的 Android 手机的人可以毫无问题地在我无法连接的地方使用 wifi。

wlp3s0    IEEE 802.11abgn  ESSID:"UniSydney"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: A4:6C:24:2E:47:D0   
          Bit Rate=130 Mb/s   Tx-Power=2 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=49/70  Signal level=-61 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:2  Invalid misc:80   Missed beacon:0

lo        no wireless extensions.

enp0s31f6  no wireless extensions.

我注意到 Tx-Power 要低得多,但我并不清楚这意味着什么。

这也可能有用:

  *-network               
       description: Wireless interface
       product: Wireless 8260
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 3a
       serial: e4:b3:18:a5:6e:32
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-34-generic firmware=16.242414.0 ip=10.244.90.191 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
       resources: irq:279 memory:f1000000-f1001fff
  *-network
       description: Ethernet interface
       product: Ethernet Connection I219-V
       vendor: Intel Corporation
       physical id: 1f.6
       bus info: pci@0000:00:1f.6
       logical name: enp0s31f6
       version: 21
       serial: 54:ab:3a:ba:0d:e2
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-4 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:280 memory:f1100000-f111ffff

答案1

问题似乎出在我所在的大学和 Linux 上。这是物理系里一个众所周知的抱怨。

解决方案是将其连接到与大学 WiFi 相连的 Android 手机或在可用时使用以太网端口。

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