ubuntu睡眠 wifi就关闭了

参考:https://letsfoss.com/fix-wifi-not-working-after-suspend-in-ubuntu/

Recently I faced this issue in my laptop.

Wifi not working after sleep in ubuntu 20.04

If the laptop wakes from sleep mode the WiFi wont't work or won't connect back to the previously connected network.

Here is the Simple way to fix that.

Open terminal and run the following command

sudo nano /lib/systemd/system-sleep/wififix 

After entering the the Password, It will open the nano editor.

Now Paste the Below Code

!/bin/sh
set -e
if [ "$2" = "suspend" ] || [ "$2" = "hybrid-sleep" ]; then
     case "$1" in
             pre) true ;;
             post) sleep 1 && service network-manager restart ;;
       esac
fi 

Press Ctrl+O and Enter to save it

Press Ctrl+X to close the file

Now, make this a executable using this command.

sudo chmod +x /lib/systemd/system-sleep/wififix 

That's it.

This Wifi not working issue fix tested on Ubuntu 20.04 Focal Fossa

It work's for other Mint and Elementary versions as well.