Options iwlwifi 11n_disable=1 – Understanding WiFi Settings

driversiwlwifimodprobenetworkingwireless

One of the common solutions for improving WiFi signal is to use this command

options iwlwifi 11n_disable=1

in

/etc/modprobe.d/iwlwifi.conf

And the number can be 0, 1, 2, 8.

I was unable to find a manual for this command. What do these numbers do? And how should we choose among the available options?

Best Answer

From the terminal command:

modinfo iwlwifi

parm: 11n_disable:disable 11n functionality, bitmap: 1: full, 2: disable agg TX, 4: disable agg RX, 8 enable agg TX (uint)

I am unaware of and have been unable to locate further documentation.

And how should we choose among the available options?

In most cases, if the router is set up optimally, that is, WPA2-AES and not any mixed mode, and set to a fixed channel, not auto-channel select, we need none of them.

However, if we are connecting at work, university or a library where we have no option to reconfigure the router to suit our preferences, it is sometimes helpful to try each in turn until we connect reliably. Generally =8 is most helpful, followed by =1. I have never encountered a case helped by any other of the other options.