WiFi:无法连接到任何网络

Question

我有一个新的安装Ubuntu20.04与所有的更新和英特尔的AX200，这似乎是现成的识别。据我所知，从内核5.1开始，这个设备应该是开箱即用的，我用的是5.4，它可以工作，但我无法连接到任何网络--我正在输入正确的密码，然后超时后提示返回。

我尝试了我的家庭WiFi，它为我的另一台计算机工作，很少的笔记本电脑(都是Linux)和很少的手机。作为一个健全检查，我也试图创建一个WiFi热点从我的手机，但有同样的问题，连接到它。

这是一些输出。

uname -sr

Linux 5.4.0-31-generic

lspci -knn (相关部分)

2d:00.0 Network controller [0280]: Intel Corporation Wi-Fi 6 AX200 [8086:2723] (rev 1a)
DeviceName: RTL8111EPV
Subsystem: Intel Corporation Wi-Fi 6 AX200 [8086:0084]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi

连接尝试后的dmesg

[  109.535290] wlo1: authenticate with 90:5c:44:ef:12:8c
[  109.538454] wlo1: send auth to 90:5c:44:ef:12:8c (try 1/3)
[  109.562154] wlo1: authenticated
[  109.565795] wlo1: associate with 90:5c:44:ef:12:8c (try 1/3)
[  109.571286] wlo1: RX AssocResp from 90:5c:44:ef:12:8c (capab=0x1511 status=17 aid=8774)
[  109.571289] wlo1: 90:5c:44:ef:12:8c denied association (code=17)
[  109.707690] wlo1: authenticate with 90:5c:44:ef:12:60
[  109.709675] wlo1: send auth to 90:5c:44:ef:12:60 (try 1/3)
[  110.323973] iwlwifi 0000:2d:00.0: No beacon heard and the time event is over already...
[  110.324007] wlo1: Connection to AP 90:5c:44:ef:12:60 lost
[  110.741987] wlo1: send auth to 90:5c:44:ef:12:60 (try 2/3)
[  111.356240] iwlwifi 0000:2d:00.0: No beacon heard and the time event is over already...
[  111.356328] wlo1: Connection to AP 90:5c:44:ef:12:60 lost
[  111.510070] wlo1: send auth to 90:5c:44:ef:12:60 (try 3/3)
[  112.124315] iwlwifi 0000:2d:00.0: No beacon heard and the time event is over already...
[  112.124402] wlo1: Connection to AP 90:5c:44:ef:12:60 lost
[  112.501653] wlo1: authentication with 90:5c:44:ef:12:60 timed out
[  113.167325] wlo1: authenticate with 90:5c:44:ef:12:8c
[  113.169701] wlo1: send auth to 90:5c:44:ef:12:8c (try 1/3)
[  113.193272] wlo1: authenticated
[  113.193622] wlo1: associate with 90:5c:44:ef:12:8c (try 1/3)
[  113.199120] wlo1: RX AssocResp from 90:5c:44:ef:12:8c (capab=0x1511 status=17 aid=9240)
[  113.199122] wlo1: 90:5c:44:ef:12:8c denied association (code=17)
[  114.246064] wlo1: authenticate with 90:5c:44:ef:12:8c
[  114.249091] wlo1: send auth to 90:5c:44:ef:12:8c (try 1/3)
[  114.272630] wlo1: authenticated
[  114.273601] wlo1: associate with 90:5c:44:ef:12:8c (try 1/3)
[  114.279087] wlo1: RX AssocResp from 90:5c:44:ef:12:8c (capab=0x1511 status=17 aid=0)
[  114.279090] wlo1: 90:5c:44:ef:12:8c denied association (code=17)
[  124.939349] wlo1: authenticate with 90:5c:44:ef:12:60
[  124.942238] wlo1: send auth to 90:5c:44:ef:12:60 (try 1/3)
[  125.556483] iwlwifi 0000:2d:00.0: No beacon heard and the time event is over already...
[  125.556692] wlo1: Connection to AP 90:5c:44:ef:12:60 lost
[  125.685931] wlo1: send auth to 90:5c:44:ef:12:60 (try 2/3)
[  126.300210] iwlwifi 0000:2d:00.0: No beacon heard and the time event is over already...
[  126.300254] wlo1: Connection to AP 90:5c:44:ef:12:60 lost
[  126.518729] wlo1: send auth to 90:5c:44:ef:12:60 (try 3/3)
[  127.132869] iwlwifi 0000:2d:00.0: No beacon heard and the time event is over already...
[  127.132929] wlo1: Connection to AP 90:5c:44:ef:12:60 lost
[  127.509891] wlo1: authentication with 90:5c:44:ef:12:60 timed out

社会人士是否知道这里可能有甚麽问题？我能做些什么才能补救呢？

Answer 1

所以，我用我的路由器上的20 Mhz限制了2.4GHz的信道来解决这个问题。

我还查看了网络管理器的日志，并将它们与上面发布的dmesg进行了比较，似乎所有的日志都正常工作，但信号太弱，它的信道宽度有限，尽管它比我附近的另一台计算机慢10到20倍，而且我仍然无法连接到我的手机。

然后我有了信号微弱的想法，注意到我有一个没有连接的外部天线(这是一台新电脑)。天线连接得很好，所以没那么棘手，只是我考虑过了一个简单的问题:)