From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: clicking noise with Sigmatel STAC9202 Date: Wed, 29 Jul 2009 15:37:08 +0200 Message-ID: References: <000501ca104d$533e2bb0$f9ba8310$@de> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx2.suse.de (cantor2.suse.de [195.135.220.15]) by alsa0.perex.cz (Postfix) with ESMTP id E64E310383E for ; Wed, 29 Jul 2009 15:37:08 +0200 (CEST) In-Reply-To: <000501ca104d$533e2bb0$f9ba8310$@de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: Christian Steffen Cc: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org At Wed, 29 Jul 2009 15:06:02 +0200, Christian Steffen wrote: > > Hello to all subscribers, > > > I'm new to this list and will start directly with my problem: > > I'm running some ubuntu linux on a device called "o2 Joggler", which is a > digital picture frame with touchscreen control. > Its chipsets are from intel, the cpu is an intel atom, and the other > hardware devices are controlled by an Intel System Controller Hub "Poulsbo". > > I'm running kernel 2.6.30 and the newest alsa version 1.0.20. > > This is lscpi output: > >>00:1b.0 Audio Device: Intel Corporation System Controller Hub (SCH > Poulsbo) HD Audio Controller (rev 07) > > cat proc/asound/cards: > >>0 [MID ]: HDA-Intel - HDA Intel MID > >> HDA Intel MID at 0xd01c000 irq 16 > > The Codec is a > >>Sigmatel STAC9202 > > > My problem is, that sound is working, but has constant clicking noise in the > background, also if the sound is completely muted. > First I thought this sound would come from some hdd or whatever, but the > device has no mechanical parts. But this is what it sounds like - Irregular > clicking noise. > > This noise immediately starts during boot up as soon as the module is loaded > and before X11 has started. > I already tried options like "position_fix=1 or 2" and different > "model="-options with no success. > "position_fix" didn't do anything at all and different model-options have > muted the device completely. > > > Has someone any idea to get this working? > The device comes with an own (hardly) closed linux which runs a 2.6.24 > kernel - here sound is working with no problems at all. Is the older kernel as is even with the same user-space stuff? If so, run alsa-info.sh (with --no-upload option) and save the content. Then run with the newer kernel and save the content. Attach both files to compare. thanks, Takashi