我尝试了很多方法来解决这个问题,但是都没有找到解决办法。
我尝试了下面的修复方法,但是没有成功: Rtl8723be WiFi incredibly weak 这个解决方案在同一台笔记本电脑上的Ubuntu 14.04上有效。
sudo add-apt-repository ppa:hanipouspilot/rtlwifi
sudo apt-get update
sudo apt-get install rtlwifi-new-dkms
但在Ubuntu 18.04的更新命令中出现以下错误:
Get:16 http://in.archive.ubuntu.com/ubuntu bionic-backports/universe amd64 DEP-11 Metadata [5,100 B]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/hanipouspilot/rtlwifi/ubuntu bionic Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
lspci -knn | grep Net -A3
的输出结果
13:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter [103c:81c1]
Kernel driver in use: rtl8723be
Kernel modules: rtl8723be
执行命令grep rtl8723be /etc/modprobe.d/*
的输出结果
/etc/modprobe.d/50-rtl8723be.conf:options rtl8723be ant_sel=2
/etc/modprobe.d/rtl8723-ant-sel.conf:options rtl8723be ant_sel=1
/etc/modprobe.d/rtl8723be.conf:options rtl8723be ant_sel=2
/etc/modprobe.d/rtl8723be.con:options rtl8723be ant_sel=2
内核版本:4.15.0-29-generic