[ath9k-devel] ath9k in 2.6.28.3 still does not work properly

[ath9k-devel] ath9k in 2.6.28.3 still does not work properly

[Tomek]

Hello,

I'm new to the list .. so sorry for any information repetition.

My gear is Intel QuadCore Q9660 (4 cores like 4 cpus) working on Intel
P45 chipset based mainboard with D-Link DWA 556.

I'm trying to make use of ath9k module since a few months.

Being unable to wait long enough for gentoo-source package to be
updated with so called "finally fixed" version of ath9k, I have
downloaded kernel source (2.6.28.3) manually and compiled it.

I've read on SMP problems here:

http://www.mail-archive.com/ath9k-devel at lists.ath9k.org/msg00884.html
http://www.mail-archive.com/ath9k-devel at lists.ath9k.org/msg00929.html

and have to admitt I'm using quad core cpu, so I'm likely to be an
example of SMP problem .. if it is really SMP problem.

I have read on "Loss of connectivity after large file transfer on
2.6.28" at max bottom of
http://linuxwireless.org/en/users/Drivers/ath9k and its fixture in
2.6.28.1.

I'm using my wifi  mainly to connect to my router and do some use of
my internet connection which is round 10Mb/s, so im mainly not
exceeding 1.1MB/s. Anyway .. its freezing, dependin on my usage and
butterfly effect .. every minute or every few minutes, sometimes I can
work for like 20 minutes or an hour, but it is very rare.

This is making me mad .. if I can help you testing it, debuging and so
on .. please feel free to let me know what to do, and what information
do you need to make this wifi configuration work.

Best regards,

-- 
Tomek Grzechowski
-----------------
miniman at k3o; developer/programmer;
miniman.k3o at gmail.com; +48 662 279 869 (cell)
skype: miniman.k3o

[ath9k-devel] ath9k in 2.6.28.3 still does not work properly

[Joseph Cheek]

Hi Tomek,

It is not fixed in 2.6.28.1 but it is significantly better in git-tip.

http://wireless.kernel.org/en/developers/Documentation/git-guide

Thanks!

Joseph

Tomek Grzechowski [k3o] wrote:
> Hello,
>
> I'm new to the list .. so sorry for any information repetition.
>
> My gear is Intel QuadCore Q9660 (4 cores like 4 cpus) working on Intel
> P45 chipset based mainboard with D-Link DWA 556.
>
> I'm trying to make use of ath9k module since a few months.
>
> Being unable to wait long enough for gentoo-source package to be
> updated with so called "finally fixed" version of ath9k, I have
> downloaded kernel source (2.6.28.3) manually and compiled it.
>
> I've read on SMP problems here:
>
> http://www.mail-archive.com/ath9k-devel at lists.ath9k.org/msg00884.html
> http://www.mail-archive.com/ath9k-devel at lists.ath9k.org/msg00929.html
>
> and have to admitt I'm using quad core cpu, so I'm likely to be an
> example of SMP problem .. if it is really SMP problem.
>
> I have read on "Loss of connectivity after large file transfer on
> 2.6.28" at max bottom of
> http://linuxwireless.org/en/users/Drivers/ath9k and its fixture in
> 2.6.28.1.
>
> I'm using my wifi  mainly to connect to my router and do some use of
> my internet connection which is round 10Mb/s, so im mainly not
> exceeding 1.1MB/s. Anyway .. its freezing, dependin on my usage and
> butterfly effect .. every minute or every few minutes, sometimes I can
> work for like 20 minutes or an hour, but it is very rare.
>
> This is making me mad .. if I can help you testing it, debuging and so
> on .. please feel free to let me know what to do, and what information
> do you need to make this wifi configuration work.
>
> Best regards,
>
>   

[ath9k-devel] ath9k in 2.6.28.3 still does not work properly

[Pavel Roskin]

On Tue, 2009-02-03 at 23:40 +0100, Tomek Grzechowski [k3o] wrote:

> I've read on SMP problems here:
> 
> http://www.mail-archive.com/ath9k-devel at lists.ath9k.org/msg00884.html
> http://www.mail-archive.com/ath9k-devel at lists.ath9k.org/msg00929.html
> 
> and have to admitt I'm using quad core cpu, so I'm likely to be an
> example of SMP problem .. if it is really SMP problem.

You can enable only one CPU by adding "maxcpus=1" to the kernel command
line.  This way, you'll see if the problem is SMP related.  If the
problem persists, you can recompile the kernel for a non-SMP
configuration.  This will not just disable other processors, but also
the spinlocks.

> I have read on "Loss of connectivity after large file transfer on
> 2.6.28" at max bottom of
> http://linuxwireless.org/en/users/Drivers/ath9k and its fixture in
> 2.6.28.1.

No need to worry about problems fixed in older kernels.  They should not
affect you.  If you believe that the fix was wrong, please provide
evidence (that is, comparison of the performance data with and without
the patch).  Speculations are not useful here.

> I'm using my wifi  mainly to connect to my router and do some use of
> my internet connection which is round 10Mb/s, so im mainly not
> exceeding 1.1MB/s. Anyway .. its freezing, dependin on my usage and
> butterfly effect .. every minute or every few minutes, sometimes I can
> work for like 20 minutes or an hour, but it is very rare.
> 
> This is making me mad .. if I can help you testing it, debuging and so
> on .. please feel free to let me know what to do, and what information
> do you need to make this wifi configuration work.

You could see if there are any kernel messages from the driver by
running "dmesg".  That may be useful.

Also, it may be helpful if you provide some information about your AP,
the output of "iwconfig" and the part of "iwlist wlan0 scan" pertinent
to the AP.

-- 
Regards,
Pavel Roskin

[ath9k-devel] ath9k in 2.6.28.3 still does not work properly

[Sujith]

Tomek Grzechowski [k3o] wrote:
> Hello,
> 
> I'm new to the list .. so sorry for any information repetition.
> 
> My gear is Intel QuadCore Q9660 (4 cores like 4 cpus) working on Intel
> P45 chipset based mainboard with D-Link DWA 556.
> 
> I'm trying to make use of ath9k module since a few months.
> 
> Being unable to wait long enough for gentoo-source package to be
> updated with so called "finally fixed" version of ath9k, I have
> downloaded kernel source (2.6.28.3) manually and compiled it.

You might as well use compat-wireless to get the latest code.
See: http://wireless.kernel.org/en/users/Download

Enable CONFIG_ATH9K_DEBUG=y in config.mk, load ath9k with the module parameter
debug=0x2000, and then reproduce the issue and post the log here please. Thanks.

Sujith
-- 
http://sujith-m.blogspot.com