On 10/04/2012 05:01 PM, Adrian Chadd wrote: > On 4 October 2012 15:29, Ben Greear <[email protected]> wrote: >> More fun with attenuation and ath9k: >> >> It seems that the tx-rates do not properly go to lower speeds, >> at least in some cases. >> >> I enabled lots of attenuation, and it gets into a state where the >> station drops rates down to around 100Mbps, but the AP side stays with >> high tx-rate. From sniffing, it seems that STA starts sending ARPs to AP, >> and AP responds, but packet is never received on the STA. I *do* see lots >> of rx-crc errors on the station. >> >> If I force the rate to be MCS-0, then it runs just fine. I haven't yet >> tried forcing it to run at higher rates. > > Erm. Start with the rate control output (sysfs?) and see what the > pass/fail rates are per TX rate.
It seems I was using the built-in ath9k rate control logic (or, at least it was compiled in). I tried changing to minstrel_ht, and then it works fine at lower speeds, but max speed is only about 230Mbps, when I was getting 330Mbps max before. I'm trying now to get an easy way to flip between the rate control options to make sure it is reproducible. Thanks, Ben > > > > Adrian > -- Ben Greear <[email protected]> Candela Technologies Inc http://www.candelatech.com _______________________________________________ ath9k-devel mailing list [email protected] https://lists.ath9k.org/mailman/listinfo/ath9k-devel
