Thursday, September 24, 2015

Turning off Wifi Power Management Ubuntu Linux

If you're having trouble with Wifi power management in Ubuntu, Or just want to simply keep your Wireless modem card running 100% all the time, then this post is for you.

This topic has been covered already by another excellent blogger, and I want to give them credit here: https://itechscotland.wordpress.com/2011/09/25/how-to-permanently-turn-off-wi-fi-power-management-in-ubuntu/

I just wanted to bring this subject to light again, and add to it, increasing wireless transmission power (txpower)

Run this command to turn off power management:

sudo su -c 'mkdir -p /etc/pm/power.d/; echo -e "#!/bin/bash\n\niwconfig wlan0 power off" >> /etc/pm/power.d/wireless'


To increase your Wifi power to max output, run this also:

sudo su -c 'for((i=1;i<699;i++)); do iwconfig wlan0 txpower $i > /dev/null 2>&1; done; i=$(iwlist wlan0 txpower | grep -oP "=\d+" | cut -c2-); echo "iwconfig wlan0 txpower $i" >> /etc/pm/power.d/wireless'


You will be able to see the changes in the file: /etc/pm/power.d/wireless

You can check your current settings with the iwlist command:

iwlist wlan0 power
iwlist wlan0 txpower

1 comment:

  1. maxing the power to my wifi made a big difference

    ReplyDelete