我的笔记本电脑上的 Wifi 总是断开连接。每次我重新连接时，它都能正常工作几秒钟，但之后就会断线。
我查看了许多相关问题，但似乎没有一个答案对我有用。
$ lspci -knn | grep Eth -A2
03:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8161 Gigabit Ethernet [1969:1091] (rev 10)
Subsystem: ASUSTeK Computer Inc. AR8161 Gigabit Ethernet [1043:14c7]
Kernel driver in use: alx
Kernel modules: alx
$ lshw -c 网络
WARNING: you should run this program as super-user.
*-network
description: Wireless interface
product: AR9485 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 01
serial: 24:0a:64:2b:be:83
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=4.4.0-59-generic firmware=N/A ip=192.168.2.5 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn
resources: irq:17 memory:f7d00000-f7d7ffff memory:f7d80000-f7d8ffff
*-network
description: Ethernet interface
product: AR8161 Gigabit Ethernet
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 10
serial: ac:22:0b:6b:ec:86
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=alx latency=0 link=no multicast=yes port=twisted pair
resources: irq:29 memory:f7c00000-f7c3ffff ioport:e000(size=128)
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.
$ dmesg|tail
[ 638.957018] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[ 638.957019] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[ 638.957021] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[ 638.957022] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[ 639.937787] wlp2s0: authenticate with a0:ec:80:47:05:8c
[ 639.960416] wlp2s0: send auth to a0:ec:80:47:05:8c (try 1/3)
[ 639.962881] wlp2s0: authenticated
[ 639.965111] wlp2s0: associate with a0:ec:80:47:05:8c (try 1/3)
[ 639.968755] wlp2s0: RX AssocResp from a0:ec:80:47:05:8c (capab=0x411 status=0 aid=6)
[ 639.968862] wlp2s0: associated
$ lsusb
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 04f2:b354 Chicony Electronics Co., Ltd UVC 1.00 device HD UVC WebCam
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 002: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub