Arch Linux

slavik262

Member

From: WA, USA

Registered: 2012-07-12

Posts: 46

Website

Kernel panic when enabling wireless

Since the kernel update this weekend (3.9.2-1), I encounter a kernel panic (pictured here) within a few seconds of enabling wireless.  This is on a Dell Inspiron N5010, which has a Broadcom wireless card.

Is this an Arch-centric issue, or should I report this panic somewhere else next? A cursory search doesn't seem to find other mentions of it online.

Last edited by slavik262 (2013-05-13 15:51:56)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,774

Re: Kernel panic when enabling wireless

Logging into my system over its Broadcom Wireless:

ewaller@localhost:~[255] 1002 %ssh <REDACTED>
You have new mail.
Last login: Mon May 13 08:53:00 2013 from <REDACTED>
ewaller$@$odin ~ 1001 %uname -a
Linux odin 3.9.2-1-ARCH #1 SMP PREEMPT Sat May 11 20:31:08 CEST 2013 x86_64 GNU/Linux
ewaller$@$odin ~ 1002 %lspci -nn | grep Broadcom
02:00.0 Network controller [0280]: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)
ewaller$@$odin ~ 1003 %
Connection to <REDACTED> closed.
ewaller@localhost:~ 1003 %

I use the b43 driver. 

I am curious as to your exact chipset ( lspci -nn) and which driver you are using.

Last edited by ewaller (2013-05-13 17:07:15)

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slavik262

Member

From: WA, USA

Registered: 2012-07-12

Posts: 46

Website

Re: Kernel panic when enabling wireless

From lspci -nn:

12:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)
13:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 02)

lsmod indicates I'm using brcmsmac. Is b43 preferred, and if so, how should I configure the kernel to use it instead?

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,774

Re: Kernel panic when enabling wireless

Unfortunately, according to wireless.kernel.org, no... b43 is a work in progress for that chip.

They recommend the wl or the brcmsmac  (the driver you are using). 
You might have to try the proprietary broadcom-wl

---

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
---
How to Ask Questions the Smart Way

slavik262

Member

From: WA, USA

Registered: 2012-07-12

Posts: 46

Website

Re: Kernel panic when enabling wireless

Should I escalate this issue to somewhere else? I've used this chip for months without any issues - the new kernel release seems to have broken it.

Edit: It's definitely the new kernel. Things work after downgrading to 3.8.11-1.

Last edited by slavik262 (2013-05-13 18:46:09)

k3njiy

Member

Registered: 2011-05-15

Posts: 7

Re: Kernel panic when enabling wireless

Same problem here:

uname -a
Linux yt 3.9.2-1-ARCH #1 SMP PREEMPT Sat May 11 20:31:08 CEST 2013 x86_64 GNU/Linux

and

lspci -nn
02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n Wireless LAN Controller [14e4:4727] (rev 01)

I have a Samsung Laptop but apparently the exact same wireless card.

Also I get a similar screen when my laptop crashes. (with blinking caps lock led)

It's quite random and only when accessing the network using WPA/WPA2 Enterprise with PEAP and MSCHAPv2. At home I haven't had a crash yet. ("normal" WPA2 encrypted wireless access)