FS#20735 - [kernel26] 2.6.35 freezes when bringing up Atheros AR9285 wireless card

Attached to Project: Arch Linux
Opened by Nick Nobody (nikosapi) - Saturday, 04 September 2010, 00:33 GMT
Last edited by Tobias Powalowski (tpowa) - Tuesday, 14 February 2012, 14:32 GMT
Task Type Bug Report
Category Upstream Bugs
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture i686
Severity High
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 5
Private No


When I use "ifconfig wlan0 up" to bring up my wireless card the whole system freezes. itsbrad212 (on the forums[1]) helped me determine that the specific kernel version I was using is causing the problem. He also found a thread[2] from the linux-wireless mailing list which shows that I'm not the only person affected.

The solution was to simply use a more recent version of the ath9k driver. I used the one from compat-wireless-2010-08-21 and so far it's been running smoothly.

[1] https://bbs.archlinux.org/viewtopic.php?id=104231
[2] http://www.spinics.net/lists/linux-wireless/msg54555.html

Additional info:
* kernel26 version and (both of those exhibit the bug, I can only assume the ones in between are also problematic)
* The affected card (from lspci): 04:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)

Steps to reproduce:
- ifconfig wlan0 up
- *crash*
This task depends upon

Closed by  Tobias Powalowski (tpowa)
Tuesday, 14 February 2012, 14:32 GMT
Reason for closing:  Fixed
Comment by Pablo (belerofonte) - Wednesday, 13 October 2010, 16:45 GMT
Same problem here with pcmcia card Proxim Orinoco 8470-WD with an atheros chipset. Kernel
Comment by Jelle van der Waa (jelly) - Thursday, 14 April 2011, 21:44 GMT
is this issue still around?
Comment by Pablo (belerofonte) - Friday, 22 April 2011, 13:28 GMT
Yes the issue is still present here with the latest packages form stable repositorie.

Should I report the bug upstream?
Comment by JM (fijam) - Monday, 02 May 2011, 20:16 GMT
Yes, please report upstream and post a link to upstream bug for reference. Thank you.
Comment by Pablo (belerofonte) - Wednesday, 04 May 2011, 16:03 GMT
Done. I have put a message on the linux-wireless mailing list

Comment by Ronald Weiss (ronw) - Saturday, 02 July 2011, 19:37 GMT
Hi. I have had similar problem with my AR9285 since 2.6.35, I have occasionaly tried newer kernels up to current 2.6.39, all of them having the problem, so until now I have been using But now I have switched from using wicd to networkmanager (for another unrelated reason), and the problem suddenly disappeared. I'm willing to provide more detailed information if requested.
Comment by scippio (scippio) - Monday, 19 December 2011, 11:37 GMT
Hi Ronald,
I have same card and same problem ... from kernel 2.6.34 maybe older. When I have connected LAN cable I haven't "freezing" effect.