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From: "Éric Piel" <eric.piel@tremplin-utc.net>
To: Takashi Iwai <tiwai@suse.de>
Cc: Jaroslav Kysela <perex@perex.cz>,
	"Rafael J. Wysocki" <rjw@sisk.pl>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	alsa-devel@alsa-project.org, Frank Griffin <ftg@roadrunner.com>
Subject: Re: [REGRESSION bisected] Sound goes too fast due to commit 7b3a177b0
Date: Wed, 14 Apr 2010 16:36:36 +0200	[thread overview]
Message-ID: <4BC5D2F4.4010500@tremplin-utc.net> (raw)
In-Reply-To: <s5hy6gqxiev.wl%tiwai@suse.de>

On 14/04/10 15:39, Takashi Iwai wrote:
:
> 
> bdl_pos_adj is really a workaround for devices that report wrong DMA
> position (or at the wrong timing).  I guess position_fix=1 may fix
> better.
> 
> Although the driver already has a dynamic switching of position_fix
> method, it checks only the very first read.  If it gives a (more or
> less) sane value, it prefers the position-buffer method (corresponding
> to position_fix=2) rather than reading LPIB register
> (position_fix=1).
> 
> It seems, however, that more devices work sanely with LPIB reg
> nowdays.  This wasn't the case formerly.  So, it might be better to
> use position_fix=1 as default for modern systems...
Frank,
Could you check that for you too adding "position_fix=1" fixes the problem?

To do so, edit /etc/modprobe.conf and add this line at end:
options snd-hda-intel position_fix=1

You need to reboot for this to be taken into account.

Cheers,
Eric

  reply	other threads:[~2010-04-14 14:36 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-13 21:54 [REGRESSION bisected] Sound goes too fast due to commit 7b3a177b0 Éric Piel
2010-04-14  6:08 ` Takashi Iwai
2010-04-14 11:22   ` Éric Piel
2010-04-14 11:54     ` Éric Piel
2010-04-14 13:39       ` Takashi Iwai
2010-04-14 13:39         ` Takashi Iwai
2010-04-14 14:36         ` Éric Piel [this message]
2010-04-14 15:39           ` Frank Griffin
2010-04-14 16:02             ` Takashi Iwai
2010-04-14 16:02               ` Takashi Iwai
2010-04-14 16:01     ` Takashi Iwai
2010-04-15 21:19       ` Éric Piel
2010-04-16  7:53         ` Takashi Iwai
2010-04-16  7:53           ` Takashi Iwai
2010-04-16 10:35           ` Frank Griffin
2010-04-16 10:33         ` Frank Griffin
2010-04-17 15:21         ` Frank Griffin
2010-06-17 20:17           ` Mirix
2010-06-18 12:11             ` Takashi Iwai
2010-06-18 15:25               ` Miro Moman
2010-04-16 14:55 ` Maciej Rutecki

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