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Re: ath5k regression associating with APs in 2.6.38

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On Tue, May 17, 2011 at 08:14:34PM +0300, Nick Kossifidis wrote:
> 2011/5/17 Seth Forshee <seth.forshee@xxxxxxxxxxxxx>:
> > On Mon, May 09, 2011 at 09:02:30AM +0200, Seth Forshee wrote:
> >> On Thu, May 05, 2011 at 05:30:42PM +0300, Nick Kossifidis wrote:
> >> > Hmm I don't see any errors from reset/phy code, can you disable
> >> > Network Manager/wpa-supplicant and test connection on an open network
> >> > using iw ? It 'll give us a better picture...
> >> >
> >> > If iw doesn't return any scan results we are probably hitting a PHY/RF
> >> > error specific to your device (not all vendors follow the reference
> >> > design). Maybe we should follow a blacklist/whitelist approach for
> >> > this feature.
> >>
> >> I got the results back from my tester. He was able to get scan results,
> >> but it took multiple tries and the direct probe failures appear in the
> >> log. He didn't enable ATH5K_DEBUG_RESET this time; let me know if you
> >> need that and I'll request he retest with the extra debug logs enabled.
> >
> > I got some more feedback. Most of the time iw does not get scan results,
> > but even when it does connecting to the AP isn't always successful. The
> > tester did note that he doesn't seem to have any trouble if his machine
> > is within a few feet of his AP. Let me know if you'd like something else
> > tested.
> >
> > I noticed that bugzilla #31922 (ath5k: Decreased throughput in IBSS or
> > 802.11n mode) is also fixed by reverting 8aec7af9. It seems like the
> > synth-only channel changes are resulting in poor connection quality.
> > Maybe that patch needs to be reverted?
> >
> > Thanks,
> > Seth
> >
> >
> 
> http://www.kernel.org/pub/linux/kernel/people/mickflemm/01-fast-chan-switch-modparm

That looks like it should do the trick. I'll request some testing with
it and let you know how it goes. Thanks!

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