airplane mode is switching on off continuously (18.04)

Question

I have updated ubuntu from 16.04 to 18.04.
The system has worked properly for one day.

After that it started to switching between airplane ✈️ mode on and off continuously.

Answer 1

$ sudo nano /etc/systemd/system/hp-keycodes.service

Paste the following lines or type them into the file:

[Unit]
Description=HP setkeycodes fix

[Service]
Type=oneshot
Restart=no
RemainAfterExit=no
ExecStart=/usr/bin/setkeycodes e057 240 e058 240

[Install]
WantedBy=rescue.target
WantedBy=multi-user.target
WantedBy=graphical.target

Save and confirm the filename with ctrl-x, y.

$ sudo systemctl daemon-reload
$ sudo systemctl enable hp-keycodes.service
$ sudo reboot

Details can be found here link