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how to stop wi-fi light from blinking while active

asked 2016-01-17 13:45:39 -0500

huvudtvatt gravatar image

updated 2016-01-17 20:59:47 -0500

mether gravatar image

I'm a linux newbie using Fedora 23. My laptop's wi-fi lights (two hardware LEDs on Compaq 8510p) are flashing constantly during data transmission. I find it quite distracting. "Putting tape" over them is inelegant. I was hoping to find an answer in the Fedora forums, but wasn't able to turn anything up.

It's disappointing this default behavior doesn't have a quick toggle to disable the flashing and just have the light steady illuminated for "wi-fi on" and non-illuminated for "wi-fi off".

Thanks in advance!

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Welcome to ask.fedora. I'm not sure, at present, how to answer your question, but I'd like to make sure of one thing: you're talking about physical LEDs on your computer, not something on your desktop. Please either edit your question or add a comment to reply, as you're only allowed to give one answer per question. Personally, btw, I like having the flashing lights so that when something's working slowly I know if there's data moving or not, but YMMV.

sideburns gravatar imagesideburns ( 2016-01-17 15:19:17 -0500 )edit

Thanks for the response, sideburns. I've edited the post. I do understand the reason(s) why it can be considered advantageous, but there are plenty of usage scenarios where it's unnecessary and, as I'd originally remarked, distracting.

Thanks again, and I look forward to any proposed solutions.

huvudtvatt gravatar imagehuvudtvatt ( 2016-01-17 19:00:15 -0500 )edit

This sounds like it's hardware, not software. Unless you can go into your computer's basic setup before boot and find a setting for it, you'll probably need to ask Compaq. I'm putting this as a comment, not an answer because it's possible that somebody else will know how to deal with it.

sideburns gravatar imagesideburns ( 2016-01-17 19:33:06 -0500 )edit

I think, this LED is still controlled by OS software. I had the same (annoying) problem on my Lenovo Thinkpad X201 running Fedora 21. Don't know what exactly changed the behavior but my Thinkpad X230 running Fedora 22 doesn't flash the wifi LED according to traffic throughput.

florian gravatar imageflorian ( 2016-01-17 22:25:54 -0500 )edit

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answered 2016-05-18 16:57:16 -0500

ssieb gravatar image

In a terminal as root, go to the directory /sys/class/leds. There will be several directories and you will have to find the right one. It will probably have phy in the name. In that directory there is a "file" called trigger. If you do cat trigger, you will get a list of all the options you can use with the currently selected one in [square brackets]. You just need to write the one you want back to the file. For example, echo phy0assoc > trigger should change the led to show whether or not the wifi is currently connected. Your mode name might be different. none will disable the led. You can either manually do this each boot or setup a script to do it automatically.

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answered 2016-01-17 22:33:21 -0500

florian gravatar image

The web is full of similar problems and solutions. Just check this here.

The thing I would start with is:

Create a file /etc/modprobe.d/iwlwifi.conf (must be root or sudoer) and put the following line:

options iwlwifi led_mode=1

Then restart and check if it works.

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I tried your suggestion, Florian, but unfortunately the LED behavior hasn't changed.Here's what I did.

huvudtvatt gravatar imagehuvudtvatt ( 2016-01-17 23:29:13 -0500 )edit

Can't access your link right now (blocked by my company firewall) but will take a look at it later today. In the meantime, can you post the output of lsmod | grep iwl? Thanks.

I don't have an intel based wifi card, so can't test it but maybe the option you need to set for your kernel module is not iwlwifi but maybe iwlcore or iwl_legacy.

florian gravatar imageflorian ( 2016-01-19 10:31:33 -0500 )edit

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Asked: 2016-01-17 13:45:39 -0500

Seen: 1,121 times

Last updated: May 18 '16