Arch Linux

ogkloo

Member

Registered: 2017-04-30

Posts: 2

Wireless interface randomly sets itself to down

After maybe 20 minutes of use, my wireless interface will randomly set itself to down. Obviously, this is really annoying, but it gets worse: sudo ip link set wlp2s0 up (the device is wlp2s0) returns "RTNETLINK answers: Input/Output error". The only way to set it to up is to reboot.

In fact, the only effective way to fix it seems to be rebooting, and the time that it takes to die falls off every time (from ~20 minutes down to under 1). The other way that seems effective is to reboot it while it's connected via ethernet, which fixes it until the next reboot.

rfkill list says it's unblocked.

It's an iwlwifi card, and I've had issues with it before, so the answer may very well be that the card is just terrible, but I've had people tell me they had no trouble with it.

From lspci:
02:00.0 Network controller: Intel Corporation Centrino Wireless-N + WiMAX 6150 (rev 67)

I've tried several things:
- What I mentioned about rebooting while connected via ethernet. If I reboot again, it has to be connected via ethernet, or it will die again.

- sudo pacman -Syu: Actually fixed it the first time. Failed the second, third, etc.

- disabling and reenabling iwlwifi.

- disabling dhcpd and networkManager, which is what I'm using currently.

dmesg output: https://pastebin.com/8CspzSbR

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,722

Re: Wireless interface randomly sets itself to down

Welcome to Arch Linux.  What is the output of systemctl list-unit-files --state=enabled   ?

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ogkloo

Member

Registered: 2017-04-30

Posts: 2

Re: Wireless interface randomly sets itself to down

output of systemctl list-unit-files --state=enabled

UNIT FILE                                   STATE  
autovt@.service                             enabled
dbus-org.freedesktop.NetworkManager.service enabled
dbus-org.freedesktop.nm-dispatcher.service  enabled
display-manager.service                     enabled
getty@.service                              enabled
lightdm.service                             enabled
NetworkManager-dispatcher.service           enabled
NetworkManager.service                      enabled
remote-fs.target                            enabled

Last edited by ewaller (2017-05-06 18:34:57)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,722

Re: Wireless interface randomly sets itself to down

That looks rational.  I had been looking to see if you had multiple things trying to control the hardware.  You don't.
I took the liberty of editing your post to use code tags.

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
The shortest way to ruin a country is to give power to demagogues.— Dionysius of Halicarnassus
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How to Ask Questions the Smart Way

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 9,003

Website

Re: Wireless interface randomly sets itself to down

Have you tried disabling 802.11n & and/or hardware encryption?

https://wiki.archlinux.org/index.php/Wi … on#iwlwifi

Last edited by Head_on_a_Stick (2017-05-06 21:17:19)

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