[ath9k-devel] dwa-547 very slow

[Luis R. Rodriguez <lrodriguez@atheros.com>]

On Tue, Jan 20, 2009 at 12:03:30PM -0800, Joseph Cheek wrote:
> hmm, your benchmarks for 20/40 mode in linux are similar to mine in
> throughput.  i'll put my router in 20-only mode this eve when i get home
> and see if i can get better transfer rates.
> 
> Now if I could just get my cards to maintain IP connectivity when large
> files are transferred!  luis, any luck reproducing my problems?  i can
> give you ssh access to either of my boxes if you need it 8-).

you are asking about a separate issue on a different thread from which
I cannot easily pull your distribution info, kernel version, AP used, etc,
but whatever, lets hijack this thread and abuse it to talk about your issue,
I'm lazy to switch to the other one.

FWIW I am able to reproduce loss of connectivity after a large file transfer
on Ubuntu "2.6.27-9" which happens to be "2.6.27.2" actually so I'm upgrading
to 2.6.27-11 which is only available on intrepid-updates. To get this I had to add:

# Ubuntu proposed changes
deb http://us.archive.ubuntu.com/ubuntu/ intrepid-proposed main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ intrepid-proposed main restricted

to my /etc/apt/sources.list and then I apt-get install linux-image-2.6.27-11-generic

About to give that a spin to see how it goes. This is 2.6.27.10 based. You want
at least a 2.6.27.8 based kernel if you are using ath9k as there were a few critical DMA
patches that went in there.

If you are experiencing issues as you mention on 2.6.28 then you need at least
2.6.28.1 as it has the patch, "ath9k: enable RXing of beacons on STA/IBSS", which
should fix the issue.

If you are using 2.6.29 then please let us know.

  Luis