Abnormally high latency of wifi with VLANs

[zekica]

@leprechaun

lappy which runs debian 11, is affected by power-savings while plugged in.

You can temporarily turn off power saving by manually typing: iw wlpXsX set power_save off where wlpXsX is the name of the interface.

You can permanently turn off power saving by creating a file: /etc/NetworkManager/conf.d/wifi-powersave-off.conf with the following contents:

[connection]
# Values are 0 (use default), 1 (ignore/don't touch), 2 (disable) or 3 (enable).
wifi.powersave = 2

I haven't found a way to turn it on on battery and off on AC, but in my case, it doesn't make a perceivable difference to the battery drain, so I keep it off.