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LAN issue while using tlp
October 25, 2018
November 24, 2022
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TLP will power off devices during suspend to save battery life. This answer: Need to reconnect ethernet cable to get it work after docking laptop into dock station. will reload the R8169 drivers for you realtek network card and might be a sufficient approach.
Another approach is to leave power to the network card during suspend. To do this use
sudo -H gedit /etc/default/tlp and insert these lines:
Save the file and reboot.