Wifi power management turns back on when connecting

Question

I've been having wifi connectivity issues, and I've narrowed the problem down. Wifi power management seems to mess with my connectivity. I can turn it off with:

sudo iwconfig wlan0 power off

But every time I connect to a network, power management turns back on. I've searched for solutions, but I've only found ways to make sure power management stays off when you login, reboot, etc. I think I might be able to sort this out with systemd hooks, but I don't know how that all works.

Here's what I've got:

Ubuntu 15.04
Lenovo thinkpad yoga
Intel Wireless 7260
driver: iwlwifi
kernel version 3.19.0-22-generic

Any ideas?

This is not a duplicate of Why doesn't Ubuntu automatically disable wireless networking when a wired connection is active? , but information from that post was relevant to this.

I just posted an answer to a different question that I think applies to your question, too: http://askubuntu.com/a/649707/25618 — waltinator, Jul 18 '15 at 00:10
possible duplicate of Why doesn't Ubuntu automatically disable wireless networking when a wired connection is active? — Pilot6, Jul 18 '15 at 07:10
Aha thanks! I read various things about power management causing issues but didn't know how to turn it off. Check out the difference it makes. — Timmmm, Feb 15 '16 at 11:05

score 1 · Answer 1 · edited Apr 17 '18 at 19:53

From the comment by @waltinator here's what I did. As of right now, it looks like this has fixed things.

Make a file in /etc/network/if-up.d called wifipower (the name doesn't matter):

sudo -H gedit /etc/network/if-up.d/wifipower

And write in it:

#!/bin/bash
iwconfig wlan0 power off

Save and make it executable with

sudo chmod a+x wifipower

Basically, every time a connection is established the script wifipower will be executed and turn power management off.

Wifi power management turns back on when connecting

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