我的 ASUS Q427F 中的 Wi-Fi 适配器无法被 Ubuntu 18.04.3 识别。
我找到了几十篇类似的帖子，但没有一个步骤对我有用，因此 YAWANFP（又一篇未找到 wifi 适配器的帖子）。抱歉。
无线芯片是英特尔 WiFi 6 AX201。这做过当我第一次安装 Ubuntu 时，它对我来说是可行的（我必须禁用安全启动），但在非常下次更新时，它再次停止工作并且无法识别。
安全启动仍处于禁用状态。
lshw 显示该硬件无人认领：
$ sudo lshw -C network
*-network UNCLAIMED
description: Network controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 14.3
bus info: pci@0000:00:14.3
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix cap_list
configuration: latency=0
resources: memory:c441c000-c441ffff
*-network
description: Ethernet interface
physical id: 1
logical name: enx00b56d00e75b
serial: 00:b5:6d:00:e7:5b
size: 100Mbit/s
capacity: 100Mbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=asix driverversion=22-Dec-2011 duplex=full firmware=ASIX AX88772B USB 2.0 Ethernet ip=192.168.1.37 link=yes multicast=yes port=MII speed=100Mbit/s
lspci 的输出：
$ lspci -nnk | grep -A2 0280
00:14.3 Network controller [0280]: Intel Corporation Device [8086:02f0]
Subsystem: Intel Corporation Device [8086:0074]
00:15.0 Serial bus controller [0c80]: Intel Corporation Device [8086:02e8]
没有与 iwlwifi 驱动程序相关的系统消息：
$ dmesg | grep iwl
$
该设备未在 BIOS 中禁用：
$ rfkill list all
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: asus-wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
2: asus-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
卸载并重新安装驱动程序似乎没有任何作用：
$ sudo modprobe -r iwlwifi
$ sudo modprobe iwlwifi
软重启或断电重启都无法解决问题。
其他诊断运行：
$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
$ cat /etc/netplan/*.yaml
# Let NetworkManager manage all devices on this system
network:
version: 2
renderer: NetworkManager
$ iwconfig
lo no wireless extensions.
enx00b56d00e75b no wireless extensions.
modinfo iwlwifi 的输出（截断）：
filename: /lib/modules/5.0.0-36-generic/kernel/drivers/net/wireless/intel/iwlwifi/iwlwifi.ko
license: GPL
author: Copyright(c) 2003- 2015 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-b0-43.ucode
firmware: iwlwifi-9260-th-a0-jf-a0-43.ucode
firmware: iwlwifi-9000-pu-a0-jf-b0-43.ucode
firmware: iwlwifi-9000-pu-b0-jf-b0-43.ucode
firmware: iwlwifi-9000-pu-a0-jf-a0-43.ucode
firmware: iwlwifi-Qu-b0-jf-b0-43.ucode
firmware: iwlwifi-su-z0-43.ucode
firmware: iwlwifi-QuQnj-a0-hr-a0-43.ucode
firmware: iwlwifi-QuQnj-a0-jf-b0-43.ucode
firmware: iwlwifi-QuQnj-b0-hr-b0-43.ucode
firmware: iwlwifi-Qu-b0-hr-b0-43.ucode
firmware: iwlwifi-QuQnj-f0-hr-a0-43.ucode
firmware: iwlwifi-Qu-a0-jf-b0-43.ucode
firmware: iwlwifi-Qu-a0-hr-a0-43.ucode
srcversion: 73136E4A47DE531CDC14864
<<< DJM: all 'alias' lines deleted >>>
depends: cfg80211
retpoline: Y
intree: Y
name: iwlwifi
vermagic: 5.0.0-36-generic SMP mod_unload
signat: PKCS#7
signer:
sig_key:
sig_hashalgo: md4
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 22560 devices, 4K for other devices 1:4K 2:8K 3:12K 4: 2K (default 0) (int)
parm: fw_restart:restart firmware in case of error (default true) (bool)
parm: antenna_coupling:specify antenna coupling in dB (default: 0 dB) (int)
parm: nvm_file:NVM file name (charp)
parm: d0i3_disable:disable d0i3 functionality (default: Y) (bool)
parm: lar_disable:disable LAR functionality (default: N) (bool)
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: 0 (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: fw_monitor:firmware monitor - to debug FW (default: false - needs lots of memory) (bool)
parm: d0i3_timeout:Timeout to D0i3 entry when idle (ms) (uint)
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)
uname -a 的输出：
Linux Bellatrix 5.0.0-36-generic #39~18.04.1-Ubuntu SMP Tue Nov 12 11:09:50 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
我已经束手无策了，我很绝望，互联网已经厌倦了回答这个问题，但我恳请您至少再尝试回答一次这个问题。
更新：我放弃了 18.04 并安装了 19.10，它开箱即用。反向移植可能也会有效。谢谢你的帮助。
答案1
一旦我安装了 19.10（而不是 18.04），它就可以开箱即用，所以我认为驱动程序不支持这张较新的卡。不要问我为什么它只能短暂地工作。反向移植 iwlwifi 可能也能正常工作，但我没有尝试。
谢谢大家。
答案2
由于它曾经有效，你可以尝试
cd backport-iwlwifi
make clean
make
sudo make install重启