From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756102AbYCTLVo (ORCPT ); Thu, 20 Mar 2008 07:21:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755445AbYCTLVf (ORCPT ); Thu, 20 Mar 2008 07:21:35 -0400 Received: from ns.suse.de ([195.135.220.2]:52001 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752277AbYCTLVe (ORCPT ); Thu, 20 Mar 2008 07:21:34 -0400 Date: Thu, 20 Mar 2008 12:21:33 +0100 Message-ID: From: Takashi Iwai To: Pavel Machek Cc: kernel list Subject: Re: USB-audio strange problems In-Reply-To: <20080320111637.GB24304@atrey.karlin.mff.cuni.cz> References: <20070203131014.GA4231@elf.ucw.cz> <20080319211247.GA2659@elf.ucw.cz> <20080320111637.GB24304@atrey.karlin.mff.cuni.cz> User-Agent: Wanderlust/2.15.5 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.7 (=?ISO-8859-4?Q?Sanj=F2?=) APEL/10.6 MULE XEmacs/21.5 (beta28) (fuki) (+CVS-20070806) (i386-suse-linux) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org At Thu, 20 Mar 2008 12:16:37 +0100, Pavel Machek wrote: > > > At Wed, 19 Mar 2008 22:12:47 +0100, > > Pavel Machek wrote: > > > > > > Hi! > > > > > > Ok, so it took me a year to get back to this bug. Oops. > > > > Oh well, I don't remember what was the exactly problem... > > Yes, sorry about that. > > > > > Yep, let's fix it. Just to make sure (ane debugging easy atm), could > > > > you attach the following? > > > > > > > > - content of /proc/asound/cards > > > > - content of /proc/asound/card*/stream* > > > > - the output of "lsusb -v" > > > > - the generated file via "alsactl -f store somefile" > > > > > > > > If I remember correctly, alsamixer at least doesn't break if you build > > > > snd-usb-audio driver with IGNORE_CTL_ERR enabled, right? > > > > > > I got the usb soundcard to work. I still have IGNORE_CTL_ERR enabled. > > > > > > Problem was not mixer after all... somehow it expects me to play sound > > > as 8-bit, and then I can play 16-bit mono and actually hear > > > it. _Strange_. > > > > > > So: > > > > > > mplayer -ao alsa:device=hw=0 -af format=u8 KDE_Startup.wav > > > mplayer -ao alsa:device=hw=0 -af format=s16le -af resample=48000 -af channels=1 KDE_Logout_1.ogg > > > > > > ...plays both files. > > > > > > Forget about the first mplayer, and it will play nothing. > > > > Dalls DS4201 has a known bug that it doesn't handle U8 format but only > > S8 format. The driver changes the supported format flags from U8 to > > S8 when this USB ID is detected. So you cannot play U8 format > > natively. (Still strange that it is accepted by mplayer.) > > But problem is: I have to. Otherwise the second mplayer will produce > just silence. How about "-ao alsa:device=plughw=0 -af format=u8" ? > Also, even with that treatment, I'm unable to play stereo :-(. What shows stream* proc file while playing a 16bit stereo file? Takashi