Return-path: Received: from mail-iy0-f174.google.com ([209.85.210.174]:40977 "EHLO mail-iy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753369Ab2DYAoP convert rfc822-to-8bit (ORCPT ); Tue, 24 Apr 2012 20:44:15 -0400 Received: by iadi9 with SMTP id i9so1713268iad.19 for ; Tue, 24 Apr 2012 17:44:14 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: Date: Tue, 24 Apr 2012 17:44:14 -0700 Message-ID: (sfid-20120425_024418_641933_D406883B) Subject: Re: Survey dump does not seem to work with SONY USB Wireless LAN Adapter UWA-BR100 From: Aseem Sharma To: linux-wireless@vger.kernel.org Content-Type: text/plain; charset=windows-1252 Sender: linux-wireless-owner@vger.kernel.org List-ID: Hello, I was previously using Cisco Aironet wireless adapter (it uses ath5k driver); using which I was able to get the survey dump using the following command: root@as75:~# iw phy phy0 interface add mon0 type monitor root@as75:~# ifconfig mon0 up root@as75:~# iw dev mon0 survey dump Survey data from mon0 ??????? frequency:????????????????????? 2412 MHz ??????? noise:????????????????????????? -95 dBm ??????? channel active time:??????????? 11813 ms ??????? channel busy time:????????????? 300 ms ??????? channel receive time:?????????? 237 ms ??????? channel transmit time:????????? 0 ms However, when I run the same commands after?connecting SONY USB Wireless LAN Adapter UWA-BR100 (which internally uses ath9k_htc driver) I do not seem to get any output. Also, the command is successful (as I am running echo $? which returns ?0?) My questions: 1. Is there any other command or proc/sys interface from where I can retreive this information? 2. Is there any other command option that I can use to retreive this information? 3. Is there a patch for the above said driver that I can use? Any help will be really appreciated. Thanks in advance, Aseem (Newbie with Linux drivers)