Wifi doesn't work after 4.0.1-1 kernel update

David López · 2015-04-30 13:58:08

Hi. I use 64bits archlinux, today I've updated linux from 3.18.6 to 4.0.1 and then my wifi card cannot connect to my net, network manager asks me for my password (although the password is obviously well typed). Downgrading linux to 3.18.6 solves the problem and internet connection works 'out of the box' as ever worked

I've compared dmesg and journalctl between both, 3.18.6 and 4.0.1 kernels.

dmesg-4.0.1: http://pastebin.com/ZyMvnmKm
journalctl-4.0.1: http://pastebin.com/r0r5Hd4z

dmesg-3.18.6: http://pastebin.com/1f18z9rh
journalctl-3.18.6: http://pastebin.com/HZkFASGw

I've found a warning in journalctl in 4.0.1 kernel that could be related with my problem

abr 30 14:58:51 surface NetworkManager[276]: <warn> Connection disconnected (reason 15)

However I'm really not sure what it means, any help would be very appreciated

PD: my machine is a Surface Pro and its wifi card has TONS of problems in linux, see https://bugs.archlinux.org/task/44269 and https://bugzilla.kernel.org/show_bug.cgi?id=69661 . However I believe that this problem is not related with those older bugs

einoj · 2015-05-04 07:44:24

I'm having the same issue, upgrading to 4.0.1-1-ARCH breaks my wifi. The wifi connects on boot, stays connected for about an hour then disconnect and needs a reboot
to start working again. Just turning the wifi off and on again did nothing, and it was very slow and unresponsive. Downgrading to 3.19.3-3-ARCH fixed the issue for me.

My wireless card is "Intel Corporation Wireless-N 7260" and I'm using kernel driver and module "iwlwifi".

Head_on_a_Stick · 2015-05-04 10:35:14

David López wrote:

abr 30 14:58:51 surface NetworkManager[276]: <warn> Connection disconnected (reason 15)
However I'm really not sure what it means, any help would be very appreciated

15 4-Way Handshake timeout

http://www.aboutcher.co.uk/2012/07/linu … son-codes/

I have no idea what that actually means though...

enlighter · 2015-05-04 14:05:21

There is an upstream bug report regarding wifi problem with 4.0.1 kernel at linux development bug track:
https://bugzilla.kernel.org/show_bug.cgi?id=96831
https://bugs.archlinux.org/task/44821

My wifi was not working at all on upgrading to 4.0.1-1-ARCH kernel, gnome network settings was not even showing an option for wifi.
My wifi harware is:
Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter [14e4:4727] (rev 01)

I have downgraded to 3.19.3-3-ARCH kernel, and now the system is working fine.
For now I have included linux in 'IgnorePkg' list in pacman.conf

Last edited by enlighter (2015-05-04 14:07:00)

David López · 2015-05-05 07:36:42

Thanks to everyone for your replies

einoj: I don't think it's the same issue, my wifi card isn't able to connect. By the way, my card is a Marvell 88W8797

Head_on_a_Stick, '4-way handshake' appears in my journalctl, I've found

abr 30 14:58:53 surface NetworkManager[276]: <info>  (mlan0): Activation: Stage 2 of 5 (Device Configure) complete.
abr 30 14:58:53 surface NetworkManager[276]: <warn>  Couldn't disconnect supplicant interface: This interface is not connected.
abr 30 14:58:53 surface NetworkManager[276]: <info>  Config: set interface ap_scan to 1
abr 30 14:58:55 surface NetworkManager[276]: <info>  (mlan0): supplicant interface state: scanning -> associating
abr 30 14:58:55 surface NetworkManager[276]: <info>  (mlan0): supplicant interface state: associating -> 4-way handshake
abr 30 14:59:01 surface NetworkManager[276]: <warn>  Connection disconnected (reason 15)

I'll try to find more information about that error

enlighter, I'll attach the information in the open bugs and I've blocked linux for updates in pacman.conf as well. However, I'm really not sure that our problems are the same bug, although it refuses to connect I can see the wifi option in my Network Manager applet. Could you check your journalctl to find '4-way handshake', or 'reason 15'?

enlighter · 2015-05-06 05:54:39

David, there is no 'reason 15' in my journalctl.

However, for linux 3.19.3, there is 4-way handshake completed messages:

May 02 14:42:58 Archenlighter NetworkManager[340]: <info>  (wlo1): supplicant interface state: associating -> 4-way handshake
May 02 14:42:58 Archenlighter NetworkManager[340]: <info>  (wlo1): supplicant interface state: 4-way handshake -> completed
May 02 14:58:51 Archenlighter NetworkManager[354]: <info>  (wlo1): supplicant interface state: associating -> 4-way handshake
May 02 14:58:51 Archenlighter NetworkManager[354]: <info>  (wlo1): supplicant interface state: 4-way handshake -> completed
May 02 18:20:12 Archenlighter NetworkManager[354]: <info>  (wlo1): supplicant interface state: associated -> 4-way handshake
May 02 18:20:13 Archenlighter NetworkManager[354]: <info>  (wlo1): supplicant interface state: 4-way handshake -> completed

But during the time linux 4.0.1 kernel was active there is no 4-way handshake message, however I found the following messages in journalctl during the time linux 4.0.1 kernel was in play:

May 02 14:52:49 Archenlighter avahi-daemon[336]: Leaving mDNS multicast group on interface wlo1.IPv4 with address 192.168.137.100.
May 02 14:52:49 Archenlighter wpa_supplicant[381]: wlo1: CTRL-EVENT-DISCONNECTED bssid=ec:f3:5b:3b:14:4a reason=3 locally_generated=1
May 02 14:52:49 Archenlighter kernel: wl0: link down (wlo1)
May 02 14:52:49 Archenlighter wpa_supplicant[381]: nl80211: deinit ifname=wlo1 disabled_11b_rates=0
May 02 14:52:49 Archenlighter wpa_supplicant[381]: wlo1: CTRL-EVENT-TERMINATING
May 02 14:52:49 Archenlighter NetworkManager[340]: <info>  (wlo1): device state change: activated -> deactivating (reason 'removed') [100 110 36]
May 02 14:52:50 Archenlighter NetworkManager[340]: <info>  (wlo1): device state change: deactivating -> unmanaged (reason 'removed') [110 10 36]
May 02 14:52:50 Archenlighter NetworkManager[340]: <info>  (wlo1): deactivating device (reason 'removed') [36]
May 02 14:52:50 Archenlighter NetworkManager[340]: <info>  (wlo1): canceled DHCP transaction, DHCP client pid 396
May 02 14:52:50 Archenlighter NetworkManager[340]: <info>  (wlo1): DHCPv4 state changed bound -> done
May 02 14:52:50 Archenlighter kernel: IPv6: ADDRCONF(NETDEV_UP): wlo1: link is not ready
May 02 14:58:38 Archenlighter kernel: wl 0000:0d:00.0 wlo1: renamed from wlan0

Thanks David for suggesting this!

Thanks head_on_a_stick, i've updated it.

Last edited by enlighter (2015-05-06 07:11:16)

Head_on_a_Stick · 2015-05-06 06:37:19

enlighter wrote:

P.S. : what is the proper way to post these system messages in the forum, mine is not within a box unlike yours

Use code tags:

[᠎code]terminal output here[᠎/code]

https://bbs.archlinux.org/help.php#bbcode

enlighter · 2015-05-06 10:11:38

Solved!

Apparently the problem in my system was arising due to some conflict because of the 'broadcom-wl' package being installed.

It came to notice when the broadcom-wl package was upgraded and then the same problem arose as that due to upgrade to linux-4.0.1 kernel.

I have now removed the 'broadcom-wl' package and upgraded the system to linux-4.0.1 kernel and my wifi is working again.

Arch Linux

#1 2015-04-30 13:58:08

Wifi doesn't work after 4.0.1-1 kernel update

#2 2015-05-04 07:44:24

Re: Wifi doesn't work after 4.0.1-1 kernel update

#3 2015-05-04 10:35:14

Re: Wifi doesn't work after 4.0.1-1 kernel update

#4 2015-05-04 14:05:21

Re: Wifi doesn't work after 4.0.1-1 kernel update

#5 2015-05-05 07:36:42

Re: Wifi doesn't work after 4.0.1-1 kernel update

#6 2015-05-06 05:54:39

Re: Wifi doesn't work after 4.0.1-1 kernel update

#7 2015-05-06 06:37:19

Re: Wifi doesn't work after 4.0.1-1 kernel update

#8 2015-05-06 10:11:38

Re: Wifi doesn't work after 4.0.1-1 kernel update

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