Comment 46 for bug 378156

I have TP-Link WR841ND (2x2 MIMO Atheros XSPAN Router) and WN821N (2x2 MIMO Atheros XSPAN Router).

On the PC with the WN821N, lsusb reports:

Bus 002 Device 004: ID 0cf3:1002 Atheros Communications, Inc.

and lsmod reports:
Module Size Used by
mac80211 210104 1 ar9170usb
led_class 5256 1 ar9170usb
ath 10304 1 ar9170usb
cfg80211 109144 3 ar9170usb,mac80211,ath

Before yesterday, it was loading a module called "usb" (descriptive!!!) and giving me 1 mbits, dropping out frequently wiht 90% signal strength.

Now, it is loading ar9120usb, which is probably correct, but still connects at 1Mbps:

wlan6 IEEE 802.11bgn ESSID:"kismet"
          Mode:Managed Frequency:2.412 GHz Access Point: 00:1D:0F:D9:DD:08
          Bit Rate=1 Mb/s Tx-Power=20 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=61/70 Signal level=-49 dBm Noise level=-85 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

My Intel 4965AGN notebook running Win7 connects at ~120Mbps at least twice the distance away and pushes 32Mbps / > 4 mb/s net throughput where as this only gets ~6Mbps / <1 mb/s.

I am just wondering. Is this an issue with the in-kernel Atheros drivers in general (at current state) or specific to ubuntu? I am running karmic with latest updates (2.6.31-14.48).