[ath9k-devel] ath9k randomly fails and stops working until I reboot

[ath9k-devel] ath9k randomly fails and stops working until I reboot

[Quinn Strahl]

Occasionally I lose my wireless connection to my router, and am unable to  
renew it - furthermore, attempts to bring down and back up the wireless  
interface via ifconfig results in a message:

"SIOCSIFFLAGS: Input/output error".

If I try to bring it back up again, it comes up without error - but  
scanning for or trying to associate with my router produces results as  
though the router was not there - I can confirm that it's there because  
other computers are connected to it and not losing their connections. It  
continues to not work until I reboot the computer.

I'm running Gentoo 2.6.36-r1, the card is an Atheros AR9285 in an Asus Eee  
PC 1000HE, running on the ath9k driver, built-in to the kernel. Using the  
latest drivers from compat-wireless made no discernible difference.

The output of "lspci -nnk" and "dmesg | grep ath" are attached.

Thanks for the help.
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[ath9k-devel] ath9k randomly fails and stops working until I reboot

[Peter Stuge]

Quinn Strahl wrote:
> I'm running Gentoo 2.6.36-r1, the card is an Atheros AR9285 in an Asus Eee 
> PC 1000HE, running on the ath9k driver, built-in to the kernel. Using the 
> latest drivers from compat-wireless made no discernible difference.

Your experience is quite consistent with mine. ath9k just isn't
reliable for me as STA. :\ I've tried both first generation hardware
(AR5416) and last generation hardware (AR9280) and the latter is
better but in general it is only a source of trouble for me.

The last funny failure mode I experienced is that after bringing the
interface up there's a storm of fatal PCI interrupts which lock my
system hard after a couple of seconds.

Earlier the same evening it worked fine as AP however. My experience
is that the hardware is excellent for AP mode.


//Peter

[ath9k-devel] ath9k randomly fails and stops working until I reboot

[Ben Greear]

On 11/17/2010 08:17 AM, Quinn Strahl wrote:
> Occasionally I lose my wireless connection to my router, and am unable
> to renew it - furthermore, attempts to bring down and back up the
> wireless interface via ifconfig results in a message:
>
> "SIOCSIFFLAGS: Input/output error".
>
> If I try to bring it back up again, it comes up without error - but
> scanning for or trying to associate with my router produces results as
> though the router was not there - I can confirm that it's there because
> other computers are connected to it and not losing their connections. It
> continues to not work until I reboot the computer.
>
> I'm running Gentoo 2.6.36-r1, the card is an Atheros AR9285 in an Asus
> Eee PC 1000HE, running on the ath9k driver, built-in to the kernel.
> Using the latest drivers from compat-wireless made no discernible
> difference.
>
> The output of "lspci -nnk" and "dmesg | grep ath" are attached.

Your dmesg output looks similar to what I have been hitting
with multiple STAs associating rapidly.

How reproducible is the problem in your setup?

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com