打开WiFi，显示无网络，运行命令sudo lshw -class network，结果如下：
*-network
description: Ethernet interface
product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:07:00.0
logical name: enp7s0
version: 05
serial: e0:db:55:d8:f2:20
size: 10Mbit/s
capacity: 100Mbit/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 autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl_nic/rtl8105e-1.fw latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:16 ioport:2000(size=256) memory:c1404000-c1404fff memory:c1400000-c1403fff
*-network DISABLED
description: Wireless interface
product: AR9485 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:08:00.0
logical name: wlp8s0
version: 01
serial: 9c:2a:70:52:fe:19
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=4.15.0-43-generic firmware=N/A ip=10.0.0.41 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:17 memory:c1500000-c157ffff memory:c1580000-c158ffff
*-network
description: Ethernet interface
physical id: 2
logical name: bnep0
serial: 9c:2a:70:52:fe:1a
capabilities: ethernet physical
configuration: broadcast=yes ip=192.168.44.136 multicast=yes