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Wi-Fi 6 AX201 在 Ubuntu 20.04.2 LTS 上频繁断线

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Wi-Fi 6 AX201 在 Ubuntu 20.04.2 LTS 上频繁断线

我有一台新的 Dell XPS 15，上面安装了 Ubuntu 和 Windows。

wifi 连接正常，但是经常（5-20​​ 分钟之间）断线，我需要打开并关闭 wifi 才能使其正常工作。

Wi-Fi 在 Windows 上运行良好，因此这不是严格的硬件问题，并且有线连接运行良好。

majolo-xps:~/Downloads$ sudo lshw -C network
[sudo] password for max: 
  *-network                 
       description: Wireless interface
       product: Wi-Fi 6 AX201
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       logical name: wlp0s20f3
       version: 00
       serial: dc:41:a9:fa:30:e3
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.8.0-48-generic firmware=55.d9698065.0 QuZ-a0-hr-b0-55.u ip=192.168.0.89 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: iomemory:600-5ff irq:16 memory:604b11c000-604b11ffff

majolo-xps:~/Downloads$ iwconfig
lo        no wireless extensions.

wlp0s20f3  IEEE 802.11  ESSID:"Home Wifi"  
          Mode:Managed  Frequency:5.22 GHz  Access Point: AC:F8:CC:1D:EC:29   
          Bit Rate=650 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=57/70  Signal level=-53 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:16   Missed beacon:0

docker0   no wireless extensions.

br-fa72099ecf25  no wireless extensions.

majolo-xps:~/Downloads$ lspci | grep Wi
00:14.3 Network controller: Intel Corporation Wi-Fi 6 AX201

majolo-xps:~/Downloads$ dmesg | tail -15
[65368.197357] wlp0s20f3: authenticate with e4:c3:2a:eb:9f:77
[65368.201488] wlp0s20f3: send auth to e4:c3:2a:eb:9f:77 (try 1/3)
[65368.231396] wlp0s20f3: authenticated
[65368.235353] wlp0s20f3: associate with e4:c3:2a:eb:9f:77 (try 1/3)
[65368.237707] wlp0s20f3: RX AssocResp from e4:c3:2a:eb:9f:77 (capab=0x1511 status=0 aid=2)
[65368.240347] wlp0s20f3: associated
[65368.242283] wlp0s20f3: Limiting TX power to 23 (23 - 0) dBm as advertised by e4:c3:2a:eb:9f:77
[65386.639407] wlp0s20f3: disconnect from AP e4:c3:2a:eb:9f:77 for new auth to ac:f8:cc:1d:ec:29
[65386.643317] wlp0s20f3: authenticate with ac:f8:cc:1d:ec:29
[65386.645504] wlp0s20f3: send auth to ac:f8:cc:1d:ec:29 (try 1/3)
[65386.676981] wlp0s20f3: authenticated
[65386.679521] wlp0s20f3: associate with ac:f8:cc:1d:ec:29 (try 1/3)
[65386.698005] wlp0s20f3: RX ReassocResp from ac:f8:cc:1d:ec:29 (capab=0x1011 status=0 aid=1)
[65386.700932] wlp0s20f3: associated
[65386.751594] wlp0s20f3: Limiting TX power to 23 (23 - 0) dBm as advertised by ac:f8:cc:1d:ec:29

Kernel: 5.8.0-48-generic

如果有人能帮助我解决这个问题或者告诉我最好的调试方法，我将不胜感激！

答案1

我找到了这个问题的答案（连接到路由器的 2.5GHz 频段而不是 5GHz 频段解决了这个问题）。更多讨论在这里：WiFi 适配器 AX201 Ubuntu 20.10 频繁掉线

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