On 2013-02-20 00:14 +0530, Sujith Manoharan wrote Adrian Chadd: SM>Adrian Chadd wrote: SM>> It's easy enough to diagnose - just enable NF cal logging. Look at SM>> what's being read back from the initial NF cal and what's being SM>> written into the time-series average. SM> SM>I discussed this with Felix a while ago, a small log is here: SM>http://pastebin.ca/2312828 (Note the jump in signal level). SM> SM>> It may be that something dumb is happening, like there's no SM>> per-channel history, or the history from the wrong channel is being SM>> used on a new channel. SM> SM>I am not sure about the dumb part, but ath9k doesn't have per-channel SM>history or calibration data. :) hm, i have signal jumps too on some cards, but it's may be a hardware problem, in one of my case this confirmed by manufacturer, then hi block 2.4 bands on it where problem occurses, and continue sell it as 5Ggz only card. and i have NF calibration jumps on this card too, it easy to se just enable calibration debug (echo 0x00000008 > /sys/kernel/debug/ieee80211/phy0/ath9k/debug) and watch on log with tail -f, you sould se something like this, may be periodicaly: 6.505180] ath: phy0: NF calibrated [ctl] [chain 0] is -68 6.505185] ath: phy0: NF[0] (-68) > MAX (-97), correcting to MAX 6.505188] ath: phy0: NF calibrated [ctl] [chain 1] is -80 6.505191] ath: phy0: NF[1] (-80) > MAX (-97), correcting to MAX 6.505194] ath: phy0: NF calibrated [ext] [chain 0] is -70 6.505197] ath: phy0: NF[3] (-70) > MAX (-97), correcting to MAX 6.505200] ath: phy0: NF calibrated [ext] [chain 1] is -80 6.505204] ath: phy0: NF[4] (-80) > MAX (-97), correcting to MAX and for example log from normal card: [61255.118534] ath: phy0: NF calibrated [ctl] [chain 1] is -110 [61255.118544] ath: phy0: NF calibrated [ext] [chain 0] is -108 [61255.118553] ath: phy0: NF calibrated [ext] [chain 1] is -110 [61285.187275] ath: phy0: NF calibrated [ctl] [chain 0] is -109 [61285.187288] ath: phy0: NF calibrated [ctl] [chain 1] is -110 [61285.187297] ath: phy0: NF calibrated [ext] [chain 0] is -108 C уважением With Best Regards Георгиевский Юрий. Georgiewskiy Yuriy +7 4872 711666 +7 4872 711666 факс +7 4872 711143 fax +7 4872 711143 Компания ООО "Ай Ти Сервис" IT Service Ltd http://nkoort.ru http://nkoort.ru JID: GHhost@xxxxxxxxxx JID: GHhost@xxxxxxxxxx YG129-RIPE YG129-RIPE
