ath9k

[Scott Robbins-2]

I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
kernels that it will constantly drop connections. I see various and
sundy bugs on both bugzilla and the kernel's bugzilla.  

Have others also been finding it to not work very well?  
(This is on an Asus 1000HE, with an Atheros 928x)


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didn't even *have* chainsaws.

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[Vedran Miletić]

On Sun, Nov 8, 2009 at 3:11 PM, Scott Robbins <[hidden email]> wrote:

> I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> kernels that it will constantly drop connections. I see various and
> sundy bugs on both bugzilla and the kernel's bugzilla.
>
> Have others also been finding it to not work very well?
> (This is on an Asus 1000HE, with an Atheros 928x)
>
>
> --
> Scott Robbins
> PGP keyID EB3467D6
> ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
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>
> Angelus: I wanna torture you. I used to love it, and it's been
> such a long time. I mean, the last time I tortured someone, they
> didn't even *have* chainsaws.
>
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D-Link DWA-547, pretty much flaky last time I used it (~5 months ago).
Used to crash sometimes.

ath5k, on the other hand, works *very* well since Fedora 10 or maybe
even earlier, can't remember.

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Vedran Miletić

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[James Hubbard]

On Sun, Nov 8, 2009 at 9:11 AM, Scott Robbins <[hidden email]> wrote:
> I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> kernels that it will constantly drop connections. I see various and
> sundy bugs on both bugzilla and the kernel's bugzilla.
>
> Have others also been finding it to not work very well?
> (This is on an Asus 1000HE, with an Atheros 928x)

The AR9285 (as reported by lspci) in the Gateway LT31 has been acting
better.  It still drops connections, but will reconnect.  It's about
half as fast when transferring files as the Intel wireless b/g card in
a 3 year old laptop.  I've noticed that I can turn off the wireless
with the switch but most of the time I can't turn it back on.

Enough people are having problems with the AR9285 that I usually get a
one or two hits/day on my blog where I detail my problems.  I had been
using Ubuntu on the LT31 but had enough issues that when the F12
support got better I switched back.

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[Scott Robbins-2]

On Sun, Nov 08, 2009 at 09:28:52AM -0500, James Hubbard wrote:

> On Sun, Nov 8, 2009 at 9:11 AM, Scott Robbins <[hidden email]> wrote:
> > I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> > kernels that it will constantly drop connections. I see various and
> > sundy bugs on both bugzilla and the kernel's bugzilla.
> >
> The AR9285 (as reported by lspci) in the Gateway LT31 has been acting
> better.  It still drops connections, but will reconnect.  It's about
> half as fast when transferring files as the Intel wireless b/g card in
> a 3 year old laptop.  I've noticed that I can turn off the wireless
> with the switch but most of the time I can't turn it back on.
>
> Enough people are having problems with the AR9285 that I usually get a
> one or two hits/day on my blog where I detail my problems.  I had been
> using Ubuntu on the LT31 but had enough issues that when the F12
> support got better I switched back.

I've always found it better on Fedora than Ubuntu.  Not sure if this is
a regression, or if it's simply that I don't use the machine that much.
:)

Just for fun, I tried the latest builds from
http://linuxwireless.org/en/users/Download

It still eventually disconnected.  

Ah well, as this card is becoming more and more common, hopfully,
support will improve.  It was like that with the ath5k for awhile, now
it's quite good.

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Angel: The same thing you do.
Buffy: Okay. What do I want?
Angel: To kill 'em. To kill 'em all.
Buffy: Sorry, that's incorrect. But, you do get this watch and a
year's supply of turtle wax. What I want is to be left alone.

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[Michael Cronenworth]

On 11/08/2009 08:11 AM, Scott Robbins wrote:
> I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> kernels that it will constantly drop connections. I see various and
> sundy bugs on both bugzilla and the kernel's bugzilla.
>
> Have others also been finding it to not work very well?
> (This is on an Asus 1000HE, with an Atheros 928x)
>    

Starting in 2.6.30 some special rfkill + energy savings code was added.
It seems all of this destroyed the reliability of the driver. It has
been reported[1], but no action has been taken on fixing it. The only
way I've been able to use my wireless chip is to force power savings
off. This allows stable connections, but I still have ~50% signal
strength when my laptop is 3 feet from the AP.

[1] http://bugzilla.kernel.org/show_bug.cgi?id=13807

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[Scott Robbins-2]

On Sun, Nov 08, 2009 at 10:52:14AM -0600, Michael Cronenworth wrote:
> On 11/08/2009 08:11 AM, Scott Robbins wrote:

>>
>> Have others also been finding it to not work very well?
>> (This is on an Asus 1000HE, with an Atheros 928x)
>>    
>
> Starting in 2.6.30 some special rfkill + energy savings code was added.  
> It seems all of this destroyed the reliability of the driver. It has  
> been reported[1], but no action has been taken on fixing it. The only  
> way I've been able to use my wireless chip is to force power savings  
> off. This allows stable connections, but I still have ~50% signal  
> strength when my laptop is 3 feet from the AP.
>
> [1] http://bugzilla.kernel.org/show_bug.cgi?id=13807

Ah, thank you for the explanation.

So, basically, it's a known regression in most default installations of
any distribution using 2.6.30 and up.

Thanks for tracking it down.



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 Buffy: It was exactly you, Will. Every detail. Except for your not
 being a dominatrix... as far as we know.
 Willow: Oh, right, me and Oz play Mistress of Pain every night.
 Xander: Did anyone else just go to a scary visual place?
 Buffy: Oh, yeah.
 Giles: (raises glasses)

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[Adam Williamson]

On Sun, 2009-11-08 at 09:11 -0500, Scott Robbins wrote:
> I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> kernels that it will constantly drop connections. I see various and
> sundy bugs on both bugzilla and the kernel's bugzilla.  
>
> Have others also been finding it to not work very well?  
> (This is on an Asus 1000HE, with an Atheros 928x)

as a general note, I find the ath9k in my Vaio P seems to work very
unreliably and even manage to knock down the wireless for _other_
systems connected to my router as long as it's attempting to work at
802.11n speeds. If I kick my router down to 802.11g speeds, all is
roses. Are you running at n or g?

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[Scott Robbins-2]

On Sun, Nov 08, 2009 at 11:16:58AM -0800, Adam Williamson wrote:

> On Sun, 2009-11-08 at 09:11 -0500, Scott Robbins wrote:
> > I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> > kernels that it will constantly drop connections. I see various and
> > sundy bugs on both bugzilla and the kernel's bugzilla.  
> >
> > Have others also been finding it to not work very well?  
> > (This is on an Asus 1000HE, with an Atheros 928x)
>
> as a general note, I find the ath9k in my Vaio P seems to work very
> unreliably and even manage to knock down the wireless for _other_
> systems connected to my router as long as it's attempting to work at
> 802.11n speeds. If I kick my router down to 802.11g speeds, all is
> roses. Are you running at n or g?

A combo n/g according to the router--a DLink DIR 655.  (Though I tend to
doubt that, as I've always been under the impression that to run at N,
everything has to be at N.  I think one printer and my older laptop are
both G only.

I'm trying the suggestion I saw somewhere--hrrm, the bug that Bruno
mentioned?  of running

iwconfig wlan0 power off

It's been working for at least 10 minutes now.  :)



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Giles:  Demons after money.  Whatever happened to the still-beating
heart of a virgin?  No one has any standards anymore.

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[Michal Jaegermann]

On Sun, Nov 08, 2009 at 11:16:58AM -0800, Adam Williamson wrote:
> On Sun, 2009-11-08 at 09:11 -0500, Scott Robbins wrote:
> > I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> > kernels that it will constantly drop connections.
>
> as a general note, I find the ath9k in my Vaio P seems to work very
> unreliably and even manage to knock down the wireless for _other_
> systems connected to my router as long as it's attempting to work at
> 802.11n speeds. If I kick my router down to 802.11g speeds, all is
> roses. Are you running at n or g?

I was using ath9k on a netbook in various locations (travels) and
circumstances.  So far this netbook has on it Fedora 10 but with
2.6.29 kernels. "Standard" 2.6.27 F10 kernels were not suitable due
to various wireless issues :-).  In that configuration ath9k worked
very well even in some rather trying conditions (although I do not
know if I really bumed into something of n type; my router at home
is few years old and it surely does not have a whiff of such
protocol).  Sounds like an upcoming upgrade will bring headaches.
See in particular
https://bugzilla.redhat.com/show_bug.cgi?id=520535
https://bugzilla.redhat.com/show_bug.cgi?id=532465

   Michal

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[Scott Robbins-2]

On Sun, Nov 08, 2009 at 01:03:01PM -0700, Michal Jaegermann wrote:
> On Sun, Nov 08, 2009 at 11:16:58AM -0800, Adam Williamson wrote:
> > On Sun, 2009-11-08 at 09:11 -0500, Scott Robbins wrote:
> > > I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> > > kernels that it will constantly drop connections.
> >


> I was using ath9k on a netbook in various locations (travels) and
> circumstances.  So far this netbook has on it Fedora 10 but with
> 2.6.29 kernels. "Standard" 2.6.27 F10 kernels were not suitable due
> to various wireless issues :-).  In that configuration ath9k worked
> very well even in some rather trying conditions (although I do not
> know if I really bumed into something of n type; my router at home
> is few years old and it surely does not have a whiff of such
> protocol).  Sounds like an upcoming upgrade will bring headaches.

> See in particular
> https://bugzilla.redhat.com/show_bug.cgi?id=520535
> https://bugzilla.redhat.com/show_bug.cgi?id=532465

Thanks Michael. I see one person felt it was solved by the 11-03
compat-wireless.  Not sure which I used. (I've already reinstalled on
that machine for various reasons.)

Can Fedora do anything if it's a kernel bug?  

Maybe I'll try their (compat-wireless) git and see what happens.  
<insert some stupid pun with git and get here.>

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And...I do think she cared
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thing
would've been a strain on the relationship.

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[Adam Williamson]

On Sun, 2009-11-08 at 14:37 -0500, Scott Robbins wrote:

> A combo n/g according to the router--a DLink DIR 655.  (Though I tend to
> doubt that, as I've always been under the impression that to run at N,
> everything has to be at N.  I think one printer and my older laptop are
> both G only.

no, you can do g/n mixed - like b/g mixed it's not as efficient as doing
the faster speed only, but still should give n-supporting devices
faster-than-g speeds. AIUI anyway. most routers default to the mixed
mode, I think.

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[Scott Robbins-2]

On Sun, Nov 08, 2009 at 03:35:06PM -0500, Scott Robbins wrote:
> > > On Sun, 2009-11-08 at 09:11 -0500, Scott Robbins wrote:
> > > > I'm wondering how others are finding ath9k.  I'm finding in 2.6.31
> > > > kernels that it will constantly drop connections.
> > >

For what it's worth, I tried today's build from
http://wireless.kernel.org/download/compat-wireless-2.6/

and it's been working well.  I tried downloading the F12 DVD (2.9 GB)
and it was fine.  

So, this might be worth investigating for others having the problem.


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Willow: Well, did you try looking inside the sofa in hell?

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