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Re: Massive packet loss with ath9k, AR9280, hostapd in 802.11n mode

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> [ 1698.498801] ath: EEPROM regdomain: 0x0                                                                                             
> 
> Does this indicate that the EEPROM is locked to country code
> 0x0 (whatever that is, probably US)? "iw reg" doesn't seem to
> change anything: 

Yep, that's the case.

However, "iw XXX reg set XX" should *STILL* change some things, 
so I guess that crda/regdb isn't still correctly installed. And 
you should still see something in your "dmesg" output. Hey, 
even "COUNTRY=AT crda" should change/produce something, e.g. 
check "dmesg" and "iw list".

However, I've now switched my kernel to no longer include

> [ 1686.542910] cfg80211: Using static regulatory domain info

You probably should either use CRDA ("the new way") or some 
static reg info in your kernel. I personally opted for CRDA, as 
this gives me more correct channel settings.


Regarding the wrong info in your EEPROM: check the README file 
from ath_info (svn co 
http://madwifi-project.org/svn/ath_info/trunk).

I currently have the feeling, that about 50% of all WLAN cards 
bought in Germany have a "wrong" EEPROM country. Maybe importers 
simply don't care about this.



Oh, and what I'm not yet getting: how can a wrong country setting 
lead to so much packet-loss?
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