Arch Linux

n_t

Member

Registered: 2013-02-01

Posts: 48

Wifi has died since upgrade - interfaces not even recognised

I recently did an upgrade as usual, but unfortunately I've now lost all wifi capabilities. I've tried two wireless usb cards and the problem occurs for both.

When I run iwconfig - absolutely nothing. When I run lsusb -v, I see both wireless adapters being identified (only 1 plugged in at a time).

Following the wireless network configuration didn't get me very far because my interfaces are not even being recognised. Not sure what to do here?

Any ideas? Any easy way to completely the roll back the last upgrade, or see what was installed and manually rollback each package?

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,424

Website

Re: Wifi has died since upgrade - interfaces not even recognised

What was upgraded? Read pacman's log. Read the wiki page on downgrading.

What cards/drivers?

Moving to NC...

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Arch + dwm   •   Mercurial repos  •   Surfraw

Registered Linux User #482438

Head_on_a_Stick

Member

From: London

Registered: 2014-02-20

Posts: 7,733

Website

Re: Wifi has died since upgrade - interfaces not even recognised

In addition to the steps described by jasonwryan, please post the output of:

ip l
dmesg|grep 'wlp\|firmw'

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Are you infected with Wetiko?

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,804

Re: Wifi has died since upgrade - interfaces not even recognised

Make sure the kernel you are running is the same as the kernel that is installed.

Compare the version numbers provided by uname -a
and by pacman -Qi linux

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Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
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