Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755103Ab0DNLWU (ORCPT ); Wed, 14 Apr 2010 07:22:20 -0400 Received: from mailservice.tudelft.nl ([130.161.131.5]:46375 "EHLO mailservice.tudelft.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755057Ab0DNLWS (ORCPT ); Wed, 14 Apr 2010 07:22:18 -0400 X-Spam-Flag: NO X-Spam-Score: -24.389 Message-ID: <4BC5A566.8060106@tremplin-utc.net> Date: Wed, 14 Apr 2010 13:22:14 +0200 From: =?UTF-8?B?w4lyaWMgUGllbA==?= User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100331 Mandriva/3.0.4-1mdv2010.1 (2010.1) Thunderbird/3.0.4 MIME-Version: 1.0 To: Takashi Iwai CC: Jaroslav Kysela , "Rafael J. Wysocki" , Linux Kernel Mailing List , alsa-devel@alsa-project.org Subject: Re: [REGRESSION bisected] Sound goes too fast due to commit 7b3a177b0 References: <4BC4E812.6050602@tremplin-utc.net> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1813 Lines: 44 On 14/04/10 08:08, Takashi Iwai wrote: > At Tue, 13 Apr 2010 23:54:26 +0200, > Éric Piel wrote: >> >> Hello, >> >> Since 2.6.34-rc*, I have a regression on alsa which prevents the sound >> to be played correctly. When playing, the music goes too fast, skipping >> some parts. Typically, it's very easy to reproduce by doing: >> time mplayer -endpos 30 sound-file-which-lasts-more-than-thirty-sec.mp3 >> >> If the wall clock is less than 30s, you have the bug. With my intel-hda >> (AD1981), it's reliably reproducible: it gives ~27s, instead of the >> normal ~31s. >> >> After bisection, it turns out that it is commit >> 7b3a177b0d4f92b3431b8dca777313a07533a710, aka "ALSA: pcm_lib: fix >> "something must be really wrong" condition" which caused this >> regression. Reverting it on top of 2.6.34-rc3+ fixes the problem. > > What happens if you pass position_fix=1 option to snd-hda-intel? Oh! Very good remark... I've just noticed that I had an option already on the module: bdl_pos_adj=0. It seems it's not needed anymore to get my card working fine. If I remove every option (leaving bdl_pos_adj to the default value 1), it works fine. If I put bdl_pos_adj=0 and position_fix=1, it works fine again. I don't fully grasp the meaning of bdl_pos_adj, so I don't know if it's a bug to not play correctly when forcing it to 0. Is it? I'll ask to another reporter who had the same problem if bdl_pos_adj is also set to 0... > Is it via PulseAudio or other backend? This happens both with pulseaudio, oss and alsa (in which case it plays the 30s clip in 12s). Eric -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/