- 笔记本电脑:联想 ThinkPad SL510
- Ubuntu:16.04 LTS(64 位)
有时,WiFi 互联网速度会毫无原因地降至最低。如果我重新连接到此无线网络,速度会恢复正常,但只持续几分钟,然后速度又会下降。这个问题出现和消失没有任何明显的原因。
这不是 WiFi 问题,因为第二台笔记本电脑(Win10)和四部手机上的速度都很好。
终端结果为lspci -nnk | grep -iA2 net; iwconfig
:
05:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1000 [Condor Peak] [8086:0084]
Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN [8086:1315]
Kernel driver in use: iwlwifi
--
08:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 03)
Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [17aa:2131]
Kernel driver in use: r8169
Kernel modules: r8169
lo no wireless extensions.
wlp5s0 IEEE 802.11bgn ESSID:"FigVam"
Mode:Managed Frequency:2.452 GHz Access Point: F4:F2:6D:B2:83:34
Bit Rate=135 Mb/s Tx-Power=14 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:64 Invalid misc:2667 Missed beacon:0
enp8s0 no wireless extensions.
答案1
我建议禁用 wifi 电源管理
sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
重启