我已经花了好几天的时间来解决 wifi 问题，我想看看社区是否有任何建议。
我有一台较新的 Thinkpad X1，安装了 Xubuntu 21.10。一切都按预期运行，但本周早些时候，我无法再连接到互联网。我仍然可以正常连接到我网络中的其他服务器/机器。我还测试了 3 个不同的网络：1 个无线（starlink 路由器）、1 个无线（LTE 热点）、1 个以太网/USB 加密狗（DSL 路由器），它们都无法连接到外部，所以我相信问题很可能与笔记本电脑有关，而不是路由器。
提前感谢任何帮助/建议。
以下是我认为有用的一些详细信息：
编辑：无线信息脚本的完整输出可以在这里找到：https://pastebin.com/n5ag3jXg （来源：我的无线/WiFi 连接无法使用。诊断问题需要哪些信息？）
- uname -a
Linux <***> 5.13.0-21-generic #21-Ubuntu SMP Tue Oct 19 08:59:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
- 主机名控制
Icon name: computer-laptop
Chassis: laptop
Machine ID: <***>
Boot ID: <***>
Operating System: Ubuntu 21.10
Kernel: Linux 5.13.0-21-generic
Architecture: x86-64
Hardware Vendor: Lenovo
Hardware Model: ThinkPad X1 Carbon Gen 9
- lshw-C 网络
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: 20
serial: <***>
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.13.0-21-generic firmware=63.c04f3485.0 QuZ-a0-hr-b0-63.u ip=192.168.1.167 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: iomemory:600-5ff irq:16 memory:603d1cc000-603d1cffff
*-network
description: Ethernet interface
physical id: 2
logical name: ipv6leakintrf0
serial: <***>
capabilities: ethernet physical
configuration: broadcast=yes driver=dummy driverversion=5.13.0-21-generic
- 是否配置
cooper@agentcooper:~$ ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether <***> txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ipv6leakintrf0: flags=195<UP,BROADCAST,RUNNING,NOARP> mtu 1500
inet6 <***> prefixlen 64 scopeid 0x20<link>
inet6 <***> prefixlen 64 scopeid 0x0<global>
ether <***> txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 21809 bytes 2213565 (2.2 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 51738 bytes 3794209 (3.7 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 51738 bytes 3794209 (3.7 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether <***> txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp0s20f3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.167 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 <***> prefixlen 64 scopeid 0x20<link>
ether <***> txqueuelen 1000 (Ethernet)
RX packets 1498 bytes 304462 (304.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 95 bytes 11303 (11.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
- 消息 |查找
[ 72.796235] iwlwifi 0000:00:14.3: api flags index 2 larger than supported by driver
[ 72.796244] iwlwifi 0000:00:14.3: TLV_FW_FSEQ_VERSION: FSEQ Version: 89.3.35.37
[ 72.796472] iwlwifi 0000:00:14.3: loaded firmware version 63.c04f3485.0 QuZ-a0-hr-b0-63.ucode op_mode iwlmvm
[ 72.846939] iwlwifi 0000:00:14.3: Detected Intel(R) Wi-Fi 6 AX201 160MHz, REV=0x354
[ 73.035082] iwlwifi 0000:00:14.3: base HW address: <***>
[ 73.050156] iwlwifi 0000:00:14.3 wlp0s20f3: renamed from wlan0
- ls -al /lib/firmware/iwlwifi-Qu-*
-rw-r--r-- 1 root root 1103952 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-hr-b0-50.ucode
-rw-r--r-- 1 root root 1209628 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-hr-b0-53.ucode
-rw-r--r-- 1 root root 1223144 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-hr-b0-55.ucode
-rw-r--r-- 1 root root 1300764 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-hr-b0-59.ucode
-rw-r--r-- 1 root root 1329296 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-hr-b0-62.ucode
-rw-r--r-- 1 root root 1334856 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-hr-b0-63.ucode
-rw-r--r-- 1 root root 1052796 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-jf-b0-48.ucode
-rw-r--r-- 1 root root 1053004 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-jf-b0-50.ucode
-rw-r--r-- 1 root root 1147104 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-jf-b0-53.ucode
-rw-r--r-- 1 root root 1163672 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-jf-b0-55.ucode
-rw-r--r-- 1 root root 1226208 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-jf-b0-59.ucode
-rw-r--r-- 1 root root 1248672 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-jf-b0-62.ucode
-rw-r--r-- 1 root root 1252748 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-b0-jf-b0-63.ucode
-rw-r--r-- 1 root root 1106248 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-hr-b0-48.ucode
-rw-r--r-- 1 root root 1103968 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-hr-b0-50.ucode
-rw-r--r-- 1 root root 1209644 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-hr-b0-53.ucode
-rw-r--r-- 1 root root 1223160 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-hr-b0-55.ucode
-rw-r--r-- 1 root root 1300780 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-hr-b0-59.ucode
-rw-r--r-- 1 root root 1329312 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-hr-b0-62.ucode
-rw-r--r-- 1 root root 1334872 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-hr-b0-63.ucode
-rw-r--r-- 1 root root 1052816 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-jf-b0-48.ucode
-rw-r--r-- 1 root root 1053020 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-jf-b0-50.ucode
-rw-r--r-- 1 root root 1147120 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-jf-b0-53.ucode
-rw-r--r-- 1 root root 1163688 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-jf-b0-55.ucode
-rw-r--r-- 1 root root 1226224 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-jf-b0-59.ucode
-rw-r--r-- 1 root root 1248688 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-jf-b0-62.ucode
-rw-r--r-- 1 root root 1252764 Oct 20 05:22 /lib/firmware/iwlwifi-Qu-c0-jf-b0-63.ucode
- modinfo iwlwifi
license: GPL
author: Intel Corporation <[email protected]>
description: Intel(R) Wireless WiFi driver for Linux
firmware: iwlwifi-100-5.ucode
firmware: iwlwifi-1000-5.ucode
firmware: iwlwifi-135-6.ucode
firmware: iwlwifi-105-6.ucode
firmware: iwlwifi-2030-6.ucode
firmware: iwlwifi-2000-6.ucode
firmware: iwlwifi-5150-2.ucode
firmware: iwlwifi-5000-5.ucode
firmware: iwlwifi-6000g2b-6.ucode
firmware: iwlwifi-6000g2a-6.ucode
firmware: iwlwifi-6050-5.ucode
firmware: iwlwifi-6000-6.ucode
firmware: iwlwifi-7265D-29.ucode
firmware: iwlwifi-7265-17.ucode
firmware: iwlwifi-3168-29.ucode
firmware: iwlwifi-3160-17.ucode
firmware: iwlwifi-7260-17.ucode
firmware: iwlwifi-8265-36.ucode
firmware: iwlwifi-8000C-36.ucode
firmware: iwlwifi-9260-th-b0-jf-b0-46.ucode
firmware: iwlwifi-9000-pu-b0-jf-b0-46.ucode
firmware: iwlwifi-bz-a0-mr-a0-63.ucode
firmware: iwlwifi-bz-a0-gf4-a0-63.ucode
firmware: iwlwifi-bz-a0-gf-a0-63.ucode
firmware: iwlwifi-bz-a0-hr-b0-63.ucode
firmware: iwlwifi-SoSnj-a0-mr-a0-63.ucode
firmware: iwlwifi-ma-a0-mr-a0-63.ucode
firmware: iwlwifi-ma-a0-gf4-a0-63.ucode
firmware: iwlwifi-ma-a0-gf-a0-63.ucode
firmware: iwlwifi-ma-a0-hr-b0-63.ucode
firmware: iwlwifi-SoSnj-a0-jf-b0-63.ucode
firmware: iwlwifi-SoSnj-a0-hr-b0-63.ucode
firmware: iwlwifi-SoSnj-a0-gf-a0-63.ucode
firmware: iwlwifi-SoSnj-a0-gf4-a0-63.ucode
firmware: iwlwifi-ty-a0-gf-a0-63.ucode
firmware: iwlwifi-so-a0-gf-a0-63.ucode
firmware: iwlwifi-so-a0-hr-b0-63.ucode
firmware: iwlwifi-so-a0-jf-b0-63.ucode
firmware: iwlwifi-cc-a0-63.ucode
firmware: iwlwifi-QuQnj-b0-jf-b0-63.ucode
firmware: iwlwifi-QuZ-a0-jf-b0-63.ucode
firmware: iwlwifi-QuZ-a0-hr-b0-63.ucode
firmware: iwlwifi-Qu-b0-jf-b0-63.ucode
firmware: iwlwifi-Qu-c0-hr-b0-63.ucode
firmware: iwlwifi-QuQnj-b0-hr-b0-63.ucode
firmware: iwlwifi-Qu-b0-hr-b0-63.ucode
srcversion: 5B7C9BA9AE71C6036ED89E0
alias: pci:v00008086d00002727sv*sd*bc*sc*i*
alias: pci:v00008086d00007E40sv*sd*bc*sc*i*
alias: pci:v00008086d00002729sv*sd*bc*sc*i*
...
depends: cfg80211
retpoline: Y
intree: Y
name: iwlwifi
vermagic: 5.13.0-21-generic SMP mod_unload modversions
sig_id: PKCS#7
signer: Build time autogenerated kernel key
sig_key: <***>
sig_hashalgo: sha512
signature: <***>
parm: swcrypto:using crypto in software (default 0 [hardware]) (int)
parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)
parm: amsdu_size:amsdu size 0: 12K for multi Rx queue devices, 2K for AX210 devices, 4K for other devices 1:4K 2:8K 3:12K (16K buffers) 4: 2K (default 0) (int)
parm: fw_restart:restart firmware in case of error (default true) (bool)
parm: nvm_file:NVM file name (charp)
parm: uapsd_disable:disable U-APSD functionality bitmap 1: BSS 2: P2P Client (default: 3) (uint)
parm: enable_ini:Enable debug INI TLV FW debug infrastructure (default: true (bool)
parm: bt_coex_active:enable wifi/bt co-exist (default: enable) (bool)
parm: led_mode:0=system default, 1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0) (int)
parm: power_save:enable WiFi power management (default: disable) (bool)
parm: power_level:default power save level (range from 1 - 5, default: 1) (int)
parm: disable_11ac:Disable VHT capabilities (default: false) (bool)
parm: remove_when_gone:Remove dev from PCIe bus if it is deemed inaccessible (default: false) (bool)
parm: disable_11ax:Disable HE capabilities (default: false) (bool)
- 串行通信
00:02.0 VGA compatible controller: Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] (rev 01)
00:04.0 Signal processing controller: Intel Corporation TigerLake-LP Dynamic Tuning Processor Participant (rev 01)
00:06.0 PCI bridge: Intel Corporation 11th Gen Core Processor PCIe Controller (rev 01)
00:07.0 PCI bridge: Intel Corporation Tiger Lake-LP Thunderbolt 4 PCI Express Root Port #1 (rev 01)
00:07.2 PCI bridge: Intel Corporation Tiger Lake-LP Thunderbolt 4 PCI Express Root Port #2 (rev 01)
00:08.0 System peripheral: Intel Corporation GNA Scoring Accelerator module (rev 01)
00:0a.0 Signal processing controller: Intel Corporation Tigerlake Telemetry Aggregator Driver (rev 01)
00:0d.0 USB controller: Intel Corporation Tiger Lake-LP Thunderbolt 4 USB Controller (rev 01)
00:0d.2 USB controller: Intel Corporation Tiger Lake-LP Thunderbolt 4 NHI #0 (rev 01)
00:0d.3 USB controller: Intel Corporation Tiger Lake-LP Thunderbolt 4 NHI #1 (rev 01)
00:14.0 USB controller: Intel Corporation Tiger Lake-LP USB 3.2 Gen 2x1 xHCI Host Controller (rev 20)
00:14.2 RAM memory: Intel Corporation Tiger Lake-LP Shared SRAM (rev 20)
00:14.3 Network controller: Intel Corporation Wi-Fi 6 AX201 (rev 20)
00:15.0 Serial bus controller [0c80]: Intel Corporation Tiger Lake-LP Serial IO I2C Controller #0 (rev 20)
00:16.0 Communication controller: Intel Corporation Tiger Lake-LP Management Engine Interface (rev 20)
00:16.3 Serial controller: Intel Corporation Tiger Lake-LP Active Management Technology - SOL (rev 20)
00:1c.0 PCI bridge: Intel Corporation Device a0b8 (rev 20)
00:1f.0 ISA bridge: Intel Corporation Tiger Lake-LP LPC Controller (rev 20)
00:1f.3 Audio device: Intel Corporation Tiger Lake-LP Smart Sound Technology Audio Controller (rev 20)
00:1f.4 SMBus: Intel Corporation Tiger Lake-LP SMBus Controller (rev 20)
00:1f.5 Serial bus controller [0c80]: Intel Corporation Tiger Lake-LP SPI Controller (rev 20)
04:00.0 Non-Volatile memory controller: SK hynix Device 174a
08:00.0 Unassigned class [ff00]: Device 1eac:1001
答案1
在撰写本文时（2022 年 4 月），AX201 卡正在使用 HWE 内核 5.13.0-40-lowlatency 的 Ubuntu Server 20.04.4 LTS 下运行
答案2
您可以尝试在 bios/uefi 设置中禁用 SecureBoot。驱动程序并不总是能与 SecureBoot 很好地配合。
您可以尝试的另一件事是关闭省电功能：
sudo sed -i 's/3/2/' /etc/NetworkManager/conf.d/*
进而
sudo systemctl restart NetworkManager.service