Comment 39 for bug 1032826

Today I tried Ubuntu Lucid 10.04 from LiveUSB. It seems that the problem also exists in Lucid, because I lost the WLAN connection. The system reconnected immediately, but the wireless speed is slow. Until now dmesg shows no error messages.

~$ lsb_release -d
Description: Ubuntu 10.04.4 LTS

~$ uname -a
Linux ubuntu 2.6.32-38-generic #83-Ubuntu SMP Wed Jan 4 11:12:07 UTC 2012 x86_64 GNU/Linux

~$ iwconfig wlan0
wlan0 IEEE 802.11bgn ESSID:"ArpaNet"
          Mode:Managed Frequency:2.412 GHz Access Point: 00:04:0E:D9:C5:4D
          Bit Rate=12 Mb/s Tx-Power=20 dBm
          Retry long limit:7 RTS thr:off Fragment thr:off
          Power Management:off
          Link Quality=36/70 Signal level=-74 dBm
          Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
          Tx excessive retries:0 Invalid misc:0 Missed beacon:0

~$ dmesg | egrep '\<ath\>|ath9k'
[ 22.327847] ath9k 0000:07:07.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[ 22.750375] ath: EEPROM regdomain: 0x809c
[ 22.750377] ath: EEPROM indicates we should expect a country code
[ 22.750379] ath: doing EEPROM country->regdmn map search
[ 22.750381] ath: country maps to regdmn code: 0x52
[ 22.750383] ath: Country alpha2 being used: CN
[ 22.750385] ath: Regpair used: 0x52
[ 22.781910] phy0: Selected rate control algorithm 'ath9k_rate_control'
[ 22.782668] Registered led device: ath9k-phy0::radio
[ 22.782689] Registered led device: ath9k-phy0::assoc
[ 22.782708] Registered led device: ath9k-phy0::tx
[ 22.782731] Registered led device: ath9k-phy0::rx