I have miniPCI Philips card build on 5211 Atheros chipset. Just after load module ath_pci I execute iwconfig command and it shows:
ath0 IEEE 802.11b ESSID:""
Mode:Master Frequency:2.412 GHz Access Point: 00:05:4E:42:32:A1
Bit Rate:0 kb/s Tx-Power:0 dBm Sensitivity=0/3
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=0/94 Signal level=-95 dBm Noise level=-95 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Why I have only 0 dBm at Tx-Power parameter? When I want to change it by command # iwconfig ath0 txpower 10 it show:
ath0 IEEE 802.11b ESSID:""
Mode:Master Frequency:2.412 GHz Access Point: 00:05:4E:42:32:A1
Bit Rate:0 kb/s Tx-Power=off Sensitivity=0/3
Retry:off RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=0/94 Signal level=-95 dBm Noise level=-95 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
It return to 0dBm by execute command # iwconfig ath0 txpower auto
Any idea? Maybe I did something wrong?
Slackware 10.2, kernel 2.4.29, madwifi driver compiled today