最近我的 wifi 速度慢了很多（下行速度 0.60/1.50 Mbs），而几个月前还好。我朋友用的是 MacBook，没有遇到同样的问题，所以我认为连接没问题（他的笔记本电脑速度为 22/30 Mbs）。此外，当我打开电脑时，我必须手动点击“启用 wifi”，而几个月前我不需要这样做。
我已经在网络和 askubuntu 上寻找解决方案，也尝试了很多答案，但问题仍然存在。
iwconfig
lo no wireless extensions.
wlo1 IEEE 802.11abg ESSID:"FASTWEB-1-jnrmAC1MY22j"
Mode:Managed Frequency:2.412 GHz Access Point: D0:D4:12:F4:D2:D2
Bit Rate=24 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=42/70 Signal level=-68 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1 Invalid misc:9215 Missed beacon:0
sudo lshw -c network
*-network
description: Wireless interface
product: Wireless 7265
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlo1
version: 50
serial: 34:02:86:df:0f:11
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-93-generic firmware=17.459231.0 ip=192.168.1.107 latency=0 link=yes multicast=yes wireless=IEEE 802.11abg
resources: irq:48 memory:b2000000-b2001fff
ifconfig
lo Link encap:Loopback locale
indirizzo inet:127.0.0.1 Maschera:255.0.0.0
indirizzo inet6: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:1264 errors:0 dropped:0 overruns:0 frame:0
TX packets:1264 errors:0 dropped:0 overruns:0 carrier:0
collisioni:0 txqueuelen:1
Byte RX:107590 (107.5 KB) Byte TX:107590 (107.5 KB)
wlo1 Link encap:Ethernet IndirizzoHW 34:02:86:df:0f:11
indirizzo inet:192.168.1.107 Bcast:192.168.1.255 Maschera:255.255.255.0
indirizzo inet6: fe80::3602:86ff:fedf:f11/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:32286 errors:0 dropped:0 overruns:0 frame:0
TX packets:33089 errors:0 dropped:0 overruns:0 carrier:0
collisioni:0 txqueuelen:1000
Byte RX:31886302 (31.8 MB) Byte TX:26421190 (26.4 MB)
lspci | grep Network
02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 50)
我的笔记本电脑是 HP Spectre x360 13-4007nl，运行 Ubuntu 16.04。