Re: iwlagn + some accesspoint = hardlock

["Lukas Grässlin" <lukasgraesslin@gmx.de>]

Hi there,

I have _exactely_ the same problem as you.

=> http://www.mail-archive.com/arch-general@archlinux.org/msg12865.html

The strange thing here also is that I mostly only get these freezes when
I'm sitting on my veranda with the thinkpad via wlan. When I'm inside
the house I have no freezes.

This is very very strange, but I happy, that I'm not the only one with
this problem.

Would be nice if you have any news if you let me know,

Regards,
	Lukas

On 22.04.2010 11:39, Nils Radtke wrote:
>   Hello there,
> 
>  today a somewhat unprecise report:
> 
> When connecting to the local university's wireless APs, rather regularly 
> presumably the kernel crashes.
> 
> So, connecting to one of those the system hardlocks. No panic LED blinking, no mouse cursor moving, 
> no magic sysreq key working. Poweroff is the only way to revive the machine. Until the upcoming
> lock-up.
> 
> What might serve as a hint: using knemo and kwifimanager (with wpa_supplicant in the bg) it feels like it is 
> freezing more frequently. Not running kwifimanager seems to reduce the frequency w/o however eliminating it
> completely. Sometimes iceweasel has been touched and then the crash occurred. 
> Maybe some TX (or subsequent RX) provokes the crash? Some idea that also came up was that accessing iwlagn 
> drivers isn't clean when it's happening from more that one place at the same time 
> (->wpa_supplicant + kwifimanager)?
> 
> This behaviour is currently only known to happen in this exact place/location. So one assumption is that it
> is somehow correlated to a particular type of access point, firmware respectively. Nonetheless, even
> if there's some fw sending kill packets, the kernel should not crash, obviously.
> 
> The access points in range are of type:
> 
> - one 0:1d:8b PIRELLI BROADBAND SOLUTIONS 
> - couple of those 0:40:96 Cisco Systems, Inc.
> - one 0:1a:70 Cisco-Linksys
> 
> This notebook has no serial port, so we haven't been able to get a glimpse on what is happening at that 
> precise moment. xconsole or dmesg haven't been helpful as the system just freezes and that's it.
> 
> Comments, ideas, fixes welcome...
> 
> Cheers,
> 
>   Nils
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
> 


-- 
Lukas Grässlin
GnuPG-Key: http://lg.ath.cx/lukasgraesslin@gmx.de.asc