在 ubuntu 18.04 上重新启动后，我的网络适配器不可用：我收到以下消息：未找到 Wifi 适配器在设置中。
我已经尝试过了解决方案，但它不起作用。我的机器是联想 Legion Y520，其结果sudo lshw -C network如下：
*-network
description: Wireless interface
product: Dual Band Wireless-AC 3165 Plus Bluetooth
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 99
serial: e4:70:b8:85:ba:2e
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-38-generic firmware=29.1044073957.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:136 memory:a4300000-a4301fff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 10
serial: 54:e1:ad:eb:a7:e7
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:19 ioport:3000(size=256) memory:a4204000-a4204fff memory:a4200000-a4203fff
*-network:0
description: Ethernet interface
physical id: 3
logical name: enp0s20f0u2
serial: 9a:6b:7f:ea:db:b0
capabilities: ethernet physical
configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.122 link=yes multicast=yes
*-network:1
description: Ethernet interface
physical id: 4
logical name: docker0
serial: 02:42:b3:63:38:bb
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.17.0.1 link=no multicast=yes
*-network:2
description: Ethernet interface
physical id: 5
logical name: br-e0c0b5a11b0f
serial: 02:42:10:5c:ab:39
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.19.0.1 link=no multicast=yes
*-network:3
description: Ethernet interface
physical id: 6
logical name: br-cd1d359cf403
serial: 02:42:4d:59:ea:81
capabilities: ethernet physical
configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.18.0.1 link=no multicast=yes
答案1
找到了之后，我必须使用以下命令重新启动飞行员：
sudo rfkill list和sudo modprobe -r ideapad-laptop