[DEFECT] iw: No output if passive scanning is requested

Rafał Miłecki zajec5 at gmail.com
Mon Jun 10 10:54:09 EDT 2013

2013/6/10 François Ravaillac <neutrino.nuovo at yahoo.com>:
> Using b43 driver with newer kernels (namely, 3.8-1-686-pae from Debian
> and 3.10.0-rc4 from git) it isn't possible to perform passive scanning
> (in 2.4GHz band) using 'iw' tool. The command 'iw dev wlan0 scan
> passive' doesn't print any output. At the same time, a usual scan with
> sending probe requests ('iw wlan0 scan' or 'iwlist wlan0 scan') does
> work as expected.
> The radio module I'm using is
> 05:00.0 Network controller [0280]: Broadcom Corporation BCM4312
> 802.11b/g LP-PHY [14e4:4315] (rev 01)
> Copy of dmesg, lspci, lsmod, 'iw phy0 info' outputs and kernel config file
> is attached.
> P.S. I'm not a developer nor programmer, but I'm ready to help to make
> linux better :)

Hm, this is very interesting. Recently I've discovered problem with
finding AP working on channel 13. It turned out to be a regression
caused by
> Scanning regression since "cfg80211: use DS or HT operation IEs to determine BSS channel"

I think it can be related. I'll try to take a look at this in free
time, but don't promise anything soon. Thanks for your report anyway.


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