Problem with Intel 7260 wireless adapter on 5 GHz on Ubuntu 14.04

Question

I installed a new Intel 7260 dual band adapter into an ASUS laptop.

The adapter works OK on 2.4 GHz, but on 5 GHz it disconnects frequently for a short time. This makes impossible to watch videos or play games.

Answer 1

After some research I found a solution.

These new Intel adapters support high mobility and scan for networks frequently.

Ubuntu 14.04 has an outdated wireless-regdb package version 2013.02.13-1ubuntu1. For many countries it does not allow to use 5GHz channels.

When the adapter tries to scan, it is disconnected for a short time from AP or transmission stops because of this conflict.

This can be checked by iw reg get command. The command will output the allowed frequencies and the country code.

If you do not see the frequencies allowed in your country, you can update the wireless-regdb package to the latest one built for Ubuntu 16.04.

Run this in terminal:

wget http://mirrors.kernel.org/ubuntu/pool/main/w/wireless-regdb/wireless-regdb_2015.07.20-1ubuntu1_all.deb
sudo dpkg -i wireless-regdb*.deb

If your country code has been properly updated in this package, the problem should be solved after a reboot.

I reported this issue to launchpad.

You can vote that this issue affects you, if this is the case.

Now my 7260 adapter works very well.