[Solved] Upgraded, can't connect to internet, nl80211 not found.

FoxzTrot · 2014-02-23 22:07:37

So after an upgraded I enthusiastically rebooted my computer to find that now I can't connect to the internet.
My technique was that I had manually set up a wpa_supplicant configuration with wlp4s0 as my interface, and had

dhcpcd wlp4s0

run on boot.
Now however, this won't connect automatically so I tried running that command and got

wlp4s0: interface not found or invalid

So I thought okay, maybe the interface changed I'll check, so I ran

iw dev

but that simply spits out

nl80211 not found.

iwconfig gives a similar response with

lo         no wireless extensions

So I thought perhaps my wireless drivers are no longer working, but when I run lspci it still picks up my card as

Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter (rev 01)

so I guess not.

Netctl and wifi-menu also don't work.

What should I do?

Last edited by FoxzTrot (2014-02-23 22:51:18)

ewaller · 2014-02-23 22:09:09

As a sanity check, verify that the kernel that is running is the same as the one that is installed. Compare the versions reported by uname -a and by pacman -Qi linux

FoxzTrot · 2014-02-23 22:29:55

Aha, they are different.

uname -a reports 3.12.9-2-ARCH

where as pacman -Qi linux reports 3.13.4-1

I was wondering why at the login shell it wasn't saying 3.13....

ewaller · 2014-02-23 22:33:44

Okay, do you said you rebooted after the upgrade. That is the usual cause of this.
The second most common cause is that the boot partition was not mounted at /boot the time of upgrade. You can check this by looking at the output of mount, and by looking at the dates in the files in /boot.
The third most common cause is that you are not booting from where you think you are.

FoxzTrot · 2014-02-23 22:48:05

Ah, well thank you for helping me realize that there is something horribly wrong with how I've set up /boot. I have it on a separate partition that I've apparently not been booting from.

Edit to avoid double post: So I unmounted my /boot partition. And then ran pacman -S linux to reinstall it to the /boot directory I was actually starting from, and now everything works! Thanks!

Last edited by FoxzTrot (2014-02-23 22:50:26)

Arch Linux

#1 2014-02-23 22:07:37

[Solved] Upgraded, can't connect to internet, nl80211 not found.

#2 2014-02-23 22:09:09

Re: [Solved] Upgraded, can't connect to internet, nl80211 not found.

#3 2014-02-23 22:29:55

Re: [Solved] Upgraded, can't connect to internet, nl80211 not found.

#4 2014-02-23 22:33:44

Re: [Solved] Upgraded, can't connect to internet, nl80211 not found.

#5 2014-02-23 22:48:05

Re: [Solved] Upgraded, can't connect to internet, nl80211 not found.

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