On Saturday 13 August 2011 22:02:18 Bernd Schubert wrote: > I bought a new usb wifi device with 2 antennas to get a better > connection to my router. So, you are saying that there was something wrong with the old stick as well, right!? > From point of few of connection strength that worked out very well, from > point of view of connection stability that is total disaster so far. Sure, you are affected by constant "loud" noise on the frequency/band. The hardware is unable to finish the noise floor calibration and therefore gives up. > With Ubuntus 2.6.38-something it connects and then entirely fails after > sending a few bytes. So I checked git log and noticed carl9170 is being > used in recent kernels and connection issues have been fixed in 3.1-git. what commits are you talking about? > > [ 1058.936551] cfg80211: Calling CRDA to update world regulatory domain > > [ 1058.945510] cfg80211: World regulatory domain updated: > > [ 1058.945519] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > > [ 1058.945529] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) > > [ 1058.945538] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) > > [ 1058.945547] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) > > [ 1058.945555] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) > > [ 1058.945563] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) > > [ 1058.945604] cfg80211: Calling CRDA for country: 97 > > [ 1061.373997] ieee80211 phy1: channel change: 2417 -> 2422 failed (2). > > [ 1061.682115] ieee80211 phy1: channel change: -1 -> 2422 failed (2). > > [ 1061.682132] usb 10-1.2: restart device (7) > > [ 1062.096523] cfg80211: Calling CRDA to update world regulatory domain > > [ 1062.105469] cfg80211: World regulatory domain updated: > > > Any idea what is going on here? Do I need a crda tool? Or is something > else failing? Yes, you need crda, if you haven't installed it already. > Update: While writing this up and after I plugged in my zd1211rw device, > eventually also my tp-link carl9170 device connected a few minutes > later. Do I always have to wait for 20 minutes to get a connection now? That's odd. TP-Link does not sell any AR9170 anymore, in fact they dropped it more than a year ago and replaced the line-up with AR7010+AR9287? so where did you get this obsolete device? Regards, Chr -- 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
