From mboxrd@z Thu Jan 1 00:00:00 1970 From: Harald Schuster Subject: poll blocked after prepare state Date: Mon, 25 Jun 2018 09:59:02 +0000 Message-ID: <20180625095902.Horde.IP1UVAcUOineuktGUtPeR52@webmail.technikum-wien.at> References: <20180621104224.Horde.WJU_RKtLDLoAGMPfW3FREnA@webmail.technikum-wien.at> <20180622132921.Horde.VdiLUhoIz-J3ymTOC0qkzL5@webmail.technikum-wien.at> <20180622183612.Horde.zlSuz13lBOQlZHX62qPNxF5@webmail.technikum-wien.at> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed"; DelSp="Yes" Content-Transfer-Encoding: 7bit Return-path: Received: from bifrost.technikum-wien.at (bifrost.technikum-wien.at [195.245.225.25]) by alsa0.perex.cz (Postfix) with ESMTP id D32A6267749 for ; Mon, 25 Jun 2018 11:59:04 +0200 (CEST) Received: from mail.technikum-wien.at (groupware.technikum-wien.at [10.127.0.250]) by bifrost2.technikum-wien.at (Postfix) with ESMTPS id 4178A223 for ; Mon, 25 Jun 2018 11:59:02 +0200 (CEST) In-Reply-To: Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org Hi We are not able to update our system. We are using USB codecs which are working fine but they are using the snd_pcm_hw_prepare function. The Problem only exists for the I2S codec in our system. When i changed the buffer size in the asound.conf for the codec the problem allready exists but it arise not so often because there is not so often a underrun. Is there any hint where i could lock for the problem?! br Harald Zitat von Takashi Iwai : > On Fri, 22 Jun 2018 20:36:12 +0200, > Harald Schuster wrote: >> >> >> Zitat von Takashi Iwai : >> >> > On Fri, 22 Jun 2018 15:29:21 +0200, >> > Harald Schuster wrote: >> >> >> >> I found out that an underrun occours and so the pcm_prepare function >> >> for pcm_direct is called and then pcm_start_dshare is called. Both >> >> functions returns without any error but the playback path is blocked >> >> in the snd_pcm_wait_nocheck function. I read that there was an similar >> >> problem before in the group but i didn't found any solution. Is this a >> >> problem in the driver and how can i go forward to fix it. The codec is >> >> a tlv320aic3x-audio. Thanks for your help. >> > >> > Does this happen with the very latest alsa-lib git version? >> > Just to be sure. >> > >> > >> > Takashi >> > _______________________________________________ >> > Alsa-devel mailing list >> > Alsa-devel@alsa-project.org >> > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel >> >> Hi >> We are using k4.1.15-6QP+ga2066af. > > I'm asking the alsa-lib, not kernel. > > And 4.1.x is very old... Please check either 4.17.x or latest Linus > tree whether the problem persists, too. > > > Takashi > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@alsa-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel