我正在运行 Xubuntu 20.04，并且遇到了 wifi 重新连接问题：有时我的 HP 笔记本电脑会与 wifi 路由器失去连接（3 米距离，无障碍物），然后无法重新连接。这是来自 syslog 的相应摘录：
Jun 24 21:50:26 hostname wpa_supplicant[1026]: wlp58s0: SME: Trying to authenticate with 34:xx:xx:xx:xx:xx (SSID='homewifi_5G-2' freq=5500 MHz)
Jun 24 21:50:26 hostname kernel: [ 6469.357476] wlp58s0: send auth to 34:xx:xx:xx:xx:xx (try 1/3)
Jun 24 21:50:26 hostname NetworkManager[7166]: <info> [1593028226.5142] device (wlp58s0): supplicant interface state: scanning -> authenticating
Jun 24 21:50:26 hostname NetworkManager[7166]: <info> [1593028226.5142] device (p2p-dev-wlp58s0): supplicant management interface state: scanning -> authenticating
Jun 24 21:50:27 hostname kernel: [ 6469.972019] iwlwifi 0000:3a:00.0: No beacon heard and the time event is over already...
Jun 24 21:50:27 hostname kernel: [ 6469.972083] wlp58s0: Connection to AP 34:xx:xx:xx:xx:xx lost
Jun 24 21:50:27 hostname kernel: [ 6470.021469] wlp58s0: send auth to 34:xx:xx:xx:xx:xx (try 2/3)
Jun 24 21:50:27 hostname kernel: [ 6470.635771] iwlwifi 0000:3a:00.0: No beacon heard and the time event is over already...
Jun 24 21:50:27 hostname kernel: [ 6470.635821] wlp58s0: Connection to AP 34:xx:xx:xx:xx:xx lost
Jun 24 21:50:28 hostname kernel: [ 6471.013103] wlp58s0: send auth to 34:xx:xx:xx:xx:xx (try 3/3)
Jun 24 21:50:28 hostname kernel: [ 6471.627473] iwlwifi 0000:3a:00.0: No beacon heard and the time event is over already...
Jun 24 21:50:28 hostname kernel: [ 6471.627570] wlp58s0: Connection to AP 34:xx:xx:xx:xx:xx lost
Jun 24 21:50:29 hostname kernel: [ 6472.004632] wlp58s0: authentication with 34:xx:xx:xx:xx:xx timed out
Jun 24 21:50:29 hostname wpa_supplicant[1026]: wlp58s0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="homewifi_5G-2" auth_failures=1 duration=10 reason=CONN_FAILED
Jun 24 21:50:29 hostname NetworkManager[7166]: <info> [1593028229.1939] device (wlp58s0): supplicant interface state: authenticating -> disconnected
Jun 24 21:50:29 hostname NetworkManager[7166]: <info> [1593028229.1940] device (p2p-dev-wlp58s0): supplicant management interface state: authenticating -> disconnected
Jun 24 21:50:30 hostname systemd[1]: NetworkManager-dispatcher.service: Succeeded.
Jun 24 21:50:39 hostname NetworkManager[7166]: <info> [1593028239.1966] device (wlp58s0): supplicant interface state: disconnected -> scanning
Jun 24 21:50:39 hostname NetworkManager[7166]: <info> [1593028239.1967] device (p2p-dev-wlp58s0): supplicant management interface state: disconnected -> scanning
Jun 24 21:50:40 hostname wpa_supplicant[1026]: wlp58s0: CTRL-EVENT-SSID-REENABLED id=0 ssid="homewifi_5G-2"
Jun 24 21:50:40 hostname wpa_supplicant[1026]: wlp58s0: SME: Trying to authenticate with 34:xx:xx:xx:xx:xx (SSID='homewifi_5G-2' freq=5500 MHz)
Jun 24 21:50:40 hostname kernel: [ 6482.882772] wlp58s0: authenticate with 34:xx:xx:xx:xx:xx
Jun 24 21:50:40 hostname kernel: [ 6482.888639] wlp58s0: send auth to 34:xx:xx:xx:xx:xx (try 1/3)
Jun 24 21:50:40 hostname NetworkManager[7166]: <info> [1593028240.0444] device (wlp58s0): supplicant interface state: scanning -> authenticating
Jun 24 21:50:40 hostname NetworkManager[7166]: <info> [1593028240.0445] device (p2p-dev-wlp58s0): supplicant management interface state: scanning -> authenticating
Jun 24 21:50:40 hostname kernel: [ 6483.502938] iwlwifi 0000:3a:00.0: No beacon heard and the time event is over already...
Jun 24 21:50:40 hostname kernel: [ 6483.503033] wlp58s0: Connection to AP 34:xx:xx:xx:xx:xx lost
Jun 24 21:50:41 hostname kernel: [ 6484.037725] wlp58s0: send auth to 34:xx:xx:xx:xx:xx (try 2/3)
Jun 24 21:50:41 hostname kernel: [ 6484.652032] iwlwifi 0000:3a:00.0: No beacon heard and the time event is over already...
Jun 24 21:50:41 hostname kernel: [ 6484.652110] wlp58s0: Connection to AP 34:xx:xx:xx:xx:xx lost
Jun 24 21:50:42 hostname kernel: [ 6484.999095] wlp58s0: send auth to 34:xx:xx:xx:xx:xx (try 3/3)
Jun 24 21:50:42 hostname kernel: [ 6485.613299] iwlwifi 0000:3a:00.0: No beacon heard and the time event is over already...
Jun 24 21:50:42 hostname kernel: [ 6485.613377] wlp58s0: Connection to AP 34:xx:xx:xx:xx:xx lost
Jun 24 21:50:43 hostname kernel: [ 6485.989445] wlp58s0: authentication with 34:xx:xx:xx:xx:xx timed out
Jun 24 21:50:43 hostname wpa_supplicant[1026]: wlp58s0: CTRL-EVENT-SSID-TEMP-DISABLED id=0 ssid="homewifi_5G-2" auth_failures=2 duration=20 reason=CONN_FAILED
Jun 24 21:50:43 hostname NetworkManager[7166]: <info> [1593028243.1721] device (wlp58s0): supplicant interface state: authenticating -> disconnected
Jun 24 21:50:43 hostname NetworkManager[7166]: <info> [1593028243.1722] device (p2p-dev-wlp58s0): supplicant management interface state: authenticating -> disconnected
Jun 24 21:50:50 hostname systemd[1]: systemd-hostnamed.service: Succeeded.
Jun 24 21:50:51 hostname NetworkManager[7166]: <warn> [1593028251.0630] device (wlp58s0): Activation: (wifi) association took too long, failing activation
Jun 24 21:50:51 hostname NetworkManager[7166]: <info> [1593028251.0631] device (wlp58s0): state change: config -> failed (reason 'ssid-not-found', sys-iface-state: 'managed')
Jun 24 21:50:51 hostname NetworkManager[7166]: <info> [1593028251.0648] manager: NetworkManager state is now DISCONNECTED
Jun 24 21:50:51 hostname NetworkManager[7166]: <warn> [1593028251.0680] device (wlp58s0): Activation: failed for connection 'homewifi_5G-2'
Jun 24 21:50:51 hostname NetworkManager[7166]: <info> [1593028251.0692] device (wlp58s0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
我的手机连接正常，但我的 Linux 笔记本却不行。重启后，一切又恢复正常，但简单的方法sudo service network-manager restart不管用。有什么线索吗？
一些 WiFi 详细信息：
$ sudo lshw -C network
*-network
description: Wireless interface
product: Wi-Fi 6 AX200
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:3a:00.0
logical name: wlp58s0
version: 1a
serial: 5c:xx:xx:xx:xx:xx
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.4.0-37-generic firmware=48.4fa0041f.0 ip=192.168.1.96 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:19 memory:c8100000-c8103fff
我的内核信息：
$ uname -a
Linux hostname 5.4.0-37-generic #41-Ubuntu SMP Wed Jun 3 18:57:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
编辑
按照要求：
$ iwlist wlp58s0 freq
wlp58s0 32 channels in total; available frequencies :
Channel 01 : 2.412 GHz
Channel 02 : 2.417 GHz
Channel 03 : 2.422 GHz
Channel 04 : 2.427 GHz
Channel 05 : 2.432 GHz
Channel 06 : 2.437 GHz
Channel 07 : 2.442 GHz
Channel 08 : 2.447 GHz
Channel 09 : 2.452 GHz
Channel 10 : 2.457 GHz
Channel 11 : 2.462 GHz
Channel 12 : 2.467 GHz
Channel 13 : 2.472 GHz
Channel 36 : 5.18 GHz
Channel 40 : 5.2 GHz
Channel 44 : 5.22 GHz
Channel 48 : 5.24 GHz
Channel 52 : 5.26 GHz
Channel 56 : 5.28 GHz
Channel 60 : 5.3 GHz
Channel 64 : 5.32 GHz
Channel 100 : 5.5 GHz
Channel 104 : 5.52 GHz
Channel 108 : 5.54 GHz
Channel 112 : 5.56 GHz
Channel 116 : 5.58 GHz
Channel 120 : 5.6 GHz
Channel 124 : 5.62 GHz
Channel 128 : 5.64 GHz
Channel 132 : 5.66 GHz
Channel 136 : 5.68 GHz
Channel 140 : 5.7 GHz
Current Frequency:5.26 GHz (Channel 52)
答案1
BIOS
HP 830 G6
您的 BIOS 版本是 R70 01.04.05。
有一款较新的 BIOS 似乎可以解决网络问题，版本 R70 01.05.03 Rev.A，发布日期为 2020 年 5 月 11 日，可下载这里。
注意：请确认我拥有适合您型号的正确网页。
注意：更新 BIOS 之前请做好备份。