Mint 22 tip

[kc1di]

I was getting wifi disconnects about every 15 mins with mint 22. So I turned off the NetworkManger power save function and it cured that.
Here is how to turn it off.
in terminal type

iwconfig

you should get a display like this

wlp3s0    IEEE 802.11  ESSID:"1970x5G"
          Mode:Managed  Frequency:5.24 GHz  Access Point: 3C:84:6A:43:3A:8B 
          Tx-Power=22 dBm 
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=64/70  Signal level=-46 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:42   Missed beacon:0

Then type

pkexec nemo

This will bring up a root copy of nemo (enter your password when asked)
Navigate to /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
Change

[connection]
wifi.powersave = 3

to

[connection]
wifi.powersave = 2

save the file.
then restart NetworkManger like this

systemctl restart NetworkManager

recheck

iwconfig

It should now show power management off
your done. Good luck.