One thing I've noticed on Dell XPS 13 running Ubuntu 20.04 LTS is that the internet grinned down to a halt after waking up the computer from a suspended state (e.g. after locking computer).
The solution
Prevent Wifi sleep mode.
$ cat /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[connection]
wifi.powersave = 3
pico /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
.- Change
WiFi.powersave
from2
to3
(Enable power saving). - If it's already set to
3
try setting it to2
(Disable power saving). - After saving the file run
sudo systemctl restart NetworkManager
Reference
How to prevent wifi sleep after suspend
Every time I open my notebook lid I have to wait a few seconds for wifi to reconnect. I remember that in Windows it was already connected. I need a way to prevent wifi from disconneting on suspend....
