From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail.kapsi.fi ([217.30.184.167]:34129 "EHLO mail.kapsi.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751281Ab2GEONx (ORCPT ); Thu, 5 Jul 2012 10:13:53 -0400 Message-ID: <4FF5A119.6020903@iki.fi> Date: Thu, 05 Jul 2012 17:13:45 +0300 From: Antti Palosaari MIME-Version: 1.0 To: Hans de Goede CC: Linux Media Mailing List , hverkuil@xs4all.nl Subject: Re: [PATCH 4/4] radio-si470x: Lower firmware version requirements References: <1339681394-11348-1-git-send-email-hdegoede@redhat.com> <1339681394-11348-4-git-send-email-hdegoede@redhat.com> <4FF45FF7.4020300@iki.fi> <4FF5515A.1030704@redhat.com> <4FF5980F.8030109@iki.fi> <4FF59995.4010604@redhat.com> In-Reply-To: <4FF59995.4010604@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 07/05/2012 04:41 PM, Hans de Goede wrote: > Hi, > > On 07/05/2012 03:35 PM, Antti Palosaari wrote: > > > >>> I believe you're doing something wrong ... >>> >>>> I compiled radio from http://git.linuxtv.org/xawtv3.git to tune and >>> > "arecord -r96000 -c2 -f S16_LE | aplay - " to play sound. Just >>> silent white noise is heard. >>> >>> You're not specifying which device arecord should record from so likely >>> it is taking >>> the default input of your soundcard (line/mic in), rather then recording >>> from the >>> radio device. >> >> I tried to define hw:1,0 etc. but only hw:0,0 exists. >> >>> Note the latest radio from http://git.linuxtv.org/xawtv3.git will do the >>> digital loopback of >>> the sound itself, so try things again with running arecord / aplay, if >>> you then start radio >>> and exit again (so that you can see its startup messages) you should see >>> something like this: >>> >>> "Using alsa loopback: cap: hw:1,0 (/dev/radio0), out: default" >>> >>> Note radio will automatically select the correct alsa device to record >>> from for the radio-usb-stick. >> >> For some reason I don't see that happening. > > Hmm, so it seems that for some reason alsa is not working with the usb > "sound-card" part of the usb-stick. Can you try doing: > > ls /dev/snd/ > > Before and after plugging in the device, you should get a new > PCMC?D0c device there. Two files appears, controlC2 and pcmC2D0c. > Otherwise see if you can enable some debugging options for snd-usb-audio > and find out why it is not liking your device (and maybe at a quirk for > it somewhere) ? If you do end up adding a quirk please let me know > and I'll test with mine to ensure the quirck does not break working > versions :) And now I can hear the voice too using "arecord -D hw:2,0 -r96000 -c2 -f S16_LE | aplay -". But loopback is still missing. regards Antti -- http://palosaari.fi/