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<DIV><FONT face=Arial size=2>Hi,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am really new to this community. So please let me
know if this topic has been well discussed before. I am
using Linksys wcf12 wireless cf card. The version of the hostap driver
is 0.2.5. I met some problem when I tried to reduce the transmission
power of the cf wireless card.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>When I execute the following commands, it gives me
the error message such as "no private ioctl supported".</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT><!--StartFragment --></DIV>
<DIV>$ iwpriv wlan0 prism2-param 5 1 //change the alc to auto
control </DIV>
<DIV>
// I have also tried 0 value here </DIV>
<DIV>
// but it generates the same error later</DIV>
<DIV><FONT face=Arial size=2>$ <FONT face="Times New Roman" size=3>iwpriv wlan0
prism2-param 6 103 // set the tx power to 103
</FONT><BR></FONT></DIV>
<DIV><FONT face=Arial>I have also tried $iwconfig wlan0 txpower 103, and it
gives me the following message. I guess it's the same
problem.</DIV></FONT><PRE><FONT size=3>Error for wireless request "Set Tx Power" (8B26) :
SET failed on device wlan0 ; Operation not supported.</FONT></PRE>
<DIV><FONT face=Arial>Several possible reason I can guess: 1) The cf
card doesn't support transmission power control. 2) The version of hostap I have
doesn't support txpower.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV>I checked $ iwpriv and it gives a list of parameters that iwpriv can
control. I didn't find txpower in it. But alc is there. I think that's why
I can change alc setting. So does that mean that the hostap doesn't support
txpower in the current version. If that's the case, how can I solve this
problem? Do I need to modify the driver by myself? </DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>Thanks in advance. Any thoughts or suggestions are highly
appreciated.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Cheers,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial>Yaoyao</FONT></DIV></FONT></DIV></BODY></HTML>