WiFi 适配器 AX201 Ubuntu 20.10 频繁掉线

WiFi 适配器 AX201 Ubuntu 20.10 频繁掉线

几周前我买了一台戴尔 g3 15,这台机器的无线连接经常断开,有时会很快恢复,有时会要求再次确认密码。

我的其他设备没有这个问题。

使用 dmesg,我明白了

root@machine:~# dmesg | tail -15
[ 8233.789105] wlp0s20f3: associated
[ 8235.316578] wlp0s20f3: deauthenticated from 5c:7d:5e:ff:4c:ee (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
[ 8235.426129] wlp0s20f3: authenticate with 5c:7d:5e:ff:4c:ee
[ 8235.430130] wlp0s20f3: send auth to 5c:7d:5e:ff:4c:ee (try 1/3)
[ 8235.453413] wlp0s20f3: authenticated
[ 8235.458847] wlp0s20f3: associate with 5c:7d:5e:ff:4c:ee (try 1/3)
[ 8235.462778] wlp0s20f3: RX AssocResp from 5c:7d:5e:ff:4c:ee (capab=0x11 status=0 aid=5)
[ 8235.467597] wlp0s20f3: associated
[ 8249.169987] wlp0s20f3: deauthenticated from 5c:7d:5e:ff:4c:ee (Reason: 7=CLASS3_FRAME_FROM_NONASSOC_STA)
[ 8249.245887] wlp0s20f3: authenticate with 5c:7d:5e:ff:4c:ee
[ 8249.249177] wlp0s20f3: send auth to 5c:7d:5e:ff:4c:ee (try 1/3)
[ 8249.273760] wlp0s20f3: authenticated
[ 8249.281098] wlp0s20f3: associate with 5c:7d:5e:ff:4c:ee (try 1/3)
[ 8249.286273] wlp0s20f3: RX AssocResp from 5c:7d:5e:ff:4c:ee (capab=0x11 status=0 aid=5)
[ 8249.289137] wlp0s20f3: associated

我可以收集的系统信息

root@machine:~# lspci | grep Wi
00:14.3 Network controller: Intel Corporation Wi-Fi 6 AX201
root@machine:~# lsmod | grep wifi
iwlwifi               364544  1 iwlmvm
cfg80211              782336  3 iwlmvm,iwlwifi,mac80211
root@machine:~# iwconfig 
lo        no wireless extensions.

enp4s0    no wireless extensions.

wlp0s20f3  IEEE 802.11  ESSID:"WLAN-4CEE84"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 5C:7D:5E:FF:4C:EE   
          Bit Rate=72.2 Mb/s   Tx-Power=22 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=67/70  Signal level=-43 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:7   Missed beacon:0
root@machine:~# lshw -C network
  *-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: 70:9c:d1:f1:d3:6c
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.8.0-44-generic firmware=55.d9698065.0 QuZ-a0-jf-b0-55.u ip=192.168.2.105 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: iomemory:600-5ff irq:16 memory:6001b1c000-6001b1ffff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:04:00.0
       logical name: enp4s0
       version: 15
       serial: 34:73:5a:b8:8e:02
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical
       configuration: broadcast=yes driver=r8169 latency=0 multicast=yes
       resources: irq:17 ioport:3000(size=256) memory:83104000-83104fff memory:83100000-83103fff

有人知道如何修复或调试这个问题吗?

答案1

我在我的新款 Dell XPS 15(使用相同的无线网卡)上遇到了与您非常类似的错误。

这肯定是 Ubuntu 的问题,因为我在同一台笔记本电脑上安装的 Windows 运行正常,其他设备也可以毫无问题地连接到网络。

我尝试了互联网上看到的很多选项,但都无济于事。

然而,在我的路由器分离2.5GHz和5GHz信道后,我发现连接到2.5GHz信道没有任何问题。

我建议尝试一下。

答案2

Majolo 的答案确实很好用,我用了几个星期。但是我有几个旧设备找不到 5GHz 频段,无法再连接到 Wifi。

作为替代解决方案,我在 WLAN 设置中选择了固定 BSSID。这似乎也能解决问题,而且不需要更改路由器设置。

附图显示了 ubuntu 20.10 的配置。(单击您的 WLAN 路由器并选择 WIFI - 设置)。在此处输入图片描述

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