[Madwifi-users] iwlist ath0 scan -- resource temporarily unavailable

[Jost D. <jo...@qd...>]

I believe I figured out what is behind the scanning problems that have
been reported here frequently:
The problem is really related to the wireless-tools package:
The 'iwlist <iface> scan' command has a timeout of 5 seconds. If you are
issuing the command on an Atheros chip (5212) with dual frequency (b/g +
a), the scanning actually takes 10 seconds (my card is a 3com
3CRPAG175). 
Now, one workaround I have been using is to limit the frequency band by
limiting the card to one frequency band (ie: iwpriv ath0 1), in which
case the card will return the scanning result fast enough and iwlist
does not time-out. 
The real fix should be to change the time-out value in the wireless-
tools package:
For v27 edit iwlist.c and change the timeout value (line 872) from
5000000 to 11000000. 
The new value of 11 seconds appears to work well for me. 

 - Jost