On 08/13/2011 10:34 PM, Christian Lamparter wrote: > 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!? There is nothing wrong with the previous zd1211rw device, its antenna is just a bit weak and so I only can use it, when my system is rather close to the router... > >> 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? For example: 582965672831180b2e1f5e15ea1f7dc6f5b93018 "carl9170: set beacon xmit power to the max" > >>> [ 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. Sorry, I forgot "update" there. So I asked if I would need to update crda. I just did that, but I just don't want to disconnect right now to see if it connects any faster. Those messages still appear every 16 seconds and spam my logs :( > >> 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? The device is a TL-WN822N available widely here, I think. I got mine from amazon, but I also could have bought it in a local shop in the city. Thanks, Bernd -- 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
