From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julian Sikorski Subject: Re: Bug#635362: Realtek ALC889: HDA Intel and kernel 3.0 gives choppy sound Date: Wed, 27 Jul 2011 00:52:00 +0200 Message-ID: References: <4E2F2E47.8080902@herbesfolles.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by alsa0.perex.cz (Postfix) with ESMTP id 577F7103803 for ; Wed, 27 Jul 2011 00:52:15 +0200 (CEST) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1QlqU2-0007i5-N8 for alsa-devel@alsa-project.org; Wed, 27 Jul 2011 00:52:14 +0200 Received: from 178-83-206-236.dynamic.hispeed.ch ([178.83.206.236]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 27 Jul 2011 00:52:14 +0200 Received: from belegdol by 178-83-206-236.dynamic.hispeed.ch with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 27 Jul 2011 00:52:14 +0200 In-Reply-To: <4E2F2E47.8080902@herbesfolles.org> 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: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org W dniu 26.07.2011 23:14, Colomban Wendling pisze: > Hi, > > Following a bug report started in Debian BTS, in bug 635362 [1], I was > asked to post here after testing upstream kernels and reproducing the bug. > > So, here's the problem: my HDA audio chip [2] started to output very > choppy sound with Linux kernel 3.0, while it worked perfectly well in > previous versions -- latest two I used being 2.6.38 and 2.6.39 from > Debian. Please note that simply booting on 2.6.39 works as usual, so > it's IMHO definitely a driver regression. > > I tried Debian's 3.0 as well as mainline 3.0 and git5 snapshots, and all > 3 were affected by the problem -- though the kernel log isn't exactly > the same. > > I attach three dmesg outputs, always took after trying to play a sound > (and hearing it choppy, it happens every time): > > dmesg-3.0.0-mainline: dmesg when running 3.0 mainline > dmesg-3.0.0-git5: when running 3.0-git5 snapshot > dmesg-3.0.0-git5-2: same as dmesg-3.0.0-git5 but configured without > CONFIG_SND_HDA_ENABLE_REALTEK_QUIRKS (doesn't change anything) > > If you want to see dmesg from the 2.6.39 kernel (where sound works well) > or Debian's 3.0, see respectively [3] and [4]. > > > Thanks by advance, and if you need any further details or testing, > please let me know. > > Regards, > Colomban > > > [1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=635362 > [2] Realtek ALC889 on an MSI H55M-E33, see lspci in Debian bug [1] for > details > [3] > http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=15;filename=dmesg-2.6.39-2-amd64;att=1;bug=635362 > [4] > http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=15;filename=dmesg-3.0.0-1-amd64;att=2;bug=635362 I am probably wrong, but did you try setting CONFIG_SND_HDA_BUFFER_SIZE to a larger value? Julian