I have the same problema, same wireless card...
I have been reading some threads about related issues, specifically the flaky connection Karmic has with wpa/wpa2 and hidden connections...
After reading a bit, it seems that there is something wrong with the Atheros drivers on Karmic's default 2.6.31 kernel. Many people recommended this fix:
Code:
sudo apt-get install linux-backports-modules-karmic-generic
sudo apt-get install linux-backports-modules-wireless-karmic-generic
Installing these packages should bring back backported drivers from the 2.6.32 kernel.
Most of them also recommended installing WICD, but i skipped that...
This solved my hidden connection problems and boosted up the connectivity a bit - not ideal yet...
My problem is only with WPA connections because WEP works fine. I only tried one of the packages - didn't know about the other - and the connection remained flaky. I have know installed both packages, but can't test it because i can't access/configure my connection to WPA. As soon as i can configure or access a WPA connection i'll try to say something...
In the meanwhile, i would apreciate feedback on if the packages work on AR9285...
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