Might anyone else have some insight here? I've tried digging through the code to see if AGC is not properly taken in to consideration during the RSSI calculation, but I think this is done in the firmware which is out of view of my eyes. On Wed, May 16, 2012 at 11:36 PM, George Nychis <gnychis@xxxxxxxxx> wrote: > > Well, I believe that I forced ANI to be disabled and I still see this > same behavior. > > To disable ANI on my AR9280, I added this to __ath9k_hw_init() in hw.c > if (AR_SREV_9280(ah)) > ah->config.enable_ani = false; > > I believe this works because in ath9k_hw_post_init() I have checked > that ah->config.enable_ani is set to false. Therefore, > ath9k_hw_ani_setup() and ath9k_hw_ani_init() are never called. > > Unfortunately, I still see this same flat line trend without strong > signal strengths near the device. > > > On Wed, May 16, 2012 at 2:35 PM, George Nychis <gnychis@xxxxxxxxx> wrote: > > > > BTW- is ANI _not_ applied on broadcast traffic? I notice that > > monitoring the signal strength of beacons does not show this behavior. > > Maybe not applied for localization reasons? > > > > - George > > > > > > On Wed, May 16, 2012 at 2:32 PM, George Nychis <gnychis@xxxxxxxxx> > > wrote: > > > Hi Holger, > > > > > > Thanks a bunch for your response! I had read about ANI before on the > > > list, it would be interesting to know if this is the cause for this. > > > It definitely seems plausible. I will dig around the ath9k code and > > > see if I can narrow down this to the cause. > > > > > > > > > On Wed, May 16, 2012 at 2:31 PM, George Nychis <gnychis@xxxxxxxxx> > > > wrote: > > >> > > >> Hi Holger, > > >> > > >> Thanks a bunch for your response! I had read about ANI before on the > > >> list, it would be interesting to know if this is the cause for this. > > >> It > > >> definitely seems plausible. I will dig around the ath9k code and see > > >> if I > > >> can narrow down this to the cause. > > >> > > >> - George > > >> > > >> > > >> On Wed, May 16, 2012 at 2:08 AM, Holger Schurig > > >> <holgerschurig@xxxxxxxxxxxxxx> wrote: > > >>> > > >>> This is probably due to ANI (adapative noise immunity). I think > > >>> ath9k > > >>> does too much here, in other words: it doesn't just kick in if there > > >>> are too strong signals there. Instead it seems to always adjust the > > >>> input attenuator, needed or not. > > >> > > >> -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
