Realtek 8192 300Mbps 802.11n/g/bs 适配器。始终可以看到网络，但除非从 USB 插槽中物理移除并重新插入，否则无法连接，然后连接完美，并保持连接状态直到重新启动。无法弄清楚。
编辑信息
uname -r
4.10.0-40-generic
lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 006: ID 0bda:818b Realtek Semiconductor Corp.
Bus 001 Device 005: ID 0a81:0101 Chesen Electronics Corp. Keyboard
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lsmod | grep rtl
rtl8xxxu 126976 0
mac80211 782336 1 rtl8xxxu
sudo lshw -C network
*-network
description: Ethernet interface
product: Ethernet Connection (2) I219-V
vendor: Intel Corporation
physical id: 1f.6
bus info: pci@0000:00:1f.6
logical name: enp0s31f6
version: 31
serial: 70:85:c2:5d:17:25
capacity: 1Gbit/s
width: 32 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.8-4 latency=0 link=no multicast=yes port=twisted pair
resources: irq:135 memory:f7f00000-f7f1ffff
*-network
description: Wireless interface
physical id: 1
bus info: usb@1:2
logical name: wlxe84e064fde7a
serial: e8:4e:06:4f:de:7a
capabilities: ethernet physical wireless
configuration: broadcast=yes driver=rtl8xxxu driverversion=4.10.0-40-generic firmware=N/A ip=192.168.1.14 link=yes multicast=yes wireless=IEEE 802.11