在华硕 ZenBook 上运行 Ubuntu 20.04。
我安装了常规系统更新，突然 WiFi 下拉菜单显示“设备未就绪”。但奇怪的是，如果我iwlist wlan0 scan正确运行它，它会列出可用的 WiFi 网络。
一些信息：
sudo lshw -C network
*-network
description: Wireless interface
product: Cannon Point-LP CNVi [Wireless-AC]
vendor: Intel Corporation
physical id: 14.3
bus info: pci@0000:00:14.3
logical name: wlan0
version: 30
serial: 38:00:25:4b:a5:37
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=5.11.0-34-generic firmware=46.4d093a30.0 9000-pu-b0-jf-b0- latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:16 memory:b431c000-b431ffff
*-network:0
description: Ethernet interface
physical id: 1
bus info: usb@1:1
logical name: usb0
serial: 66:9e:5d:31:63:5f
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=5.11.0-34-generic firmware=RNDIS device ip=192.168.71.84 link=yes multicast=yes
...
dmesg | grep iwl
[ 2.374876] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[ 2.383293] iwlwifi 0000:00:14.3: WRT: Overriding region id 0
[ 2.383296] iwlwifi 0000:00:14.3: WRT: Overriding region id 1
[ 2.383297] iwlwifi 0000:00:14.3: WRT: Overriding region id 2
[ 2.383299] iwlwifi 0000:00:14.3: WRT: Overriding region id 3
[ 2.383300] iwlwifi 0000:00:14.3: WRT: Overriding region id 4
[ 2.383301] iwlwifi 0000:00:14.3: WRT: Overriding region id 6
[ 2.383302] iwlwifi 0000:00:14.3: WRT: Overriding region id 8
[ 2.383304] iwlwifi 0000:00:14.3: WRT: Overriding region id 9
[ 2.383305] iwlwifi 0000:00:14.3: WRT: Overriding region id 10
[ 2.383306] iwlwifi 0000:00:14.3: WRT: Overriding region id 11
[ 2.383307] iwlwifi 0000:00:14.3: WRT: Overriding region id 15
[ 2.383309] iwlwifi 0000:00:14.3: WRT: Overriding region id 16
[ 2.383310] iwlwifi 0000:00:14.3: WRT: Overriding region id 18
[ 2.383311] iwlwifi 0000:00:14.3: WRT: Overriding region id 19
[ 2.383312] iwlwifi 0000:00:14.3: WRT: Overriding region id 20
[ 2.383314] iwlwifi 0000:00:14.3: WRT: Overriding region id 21
[ 2.383315] iwlwifi 0000:00:14.3: WRT: Overriding region id 28
[ 2.383513] iwlwifi 0000:00:14.3: loaded firmware version 46.4d093a30.0 9000-pu-b0-jf-b0-46.ucode op_mode iwlmvm
[ 2.747691] iwlwifi 0000:00:14.3: Detected Intel(R) Wireless-AC 9560 160MHz, REV=0x318
[ 2.795863] iwlwifi 0000:00:14.3: base HW address: 38:00:25:4b:a5:37
[ 2.863515] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
自 2007 年以来，我一直是 Ubuntu 的忠实用户，这台电脑在过去 3 年中一直运行良好。任何帮助都将不胜感激！