[alsa-devel] [PATCH] ALSA: hda_intel: add position_fix quirk for Asus K53E

[Takashi Iwai]

At Mon, 10 Sep 2012 22:48:18 +0200,
Catalin Iacob wrote:
> 
> On Mon, Sep 10, 2012 at 10:34 AM, Takashi Iwai <tiwai at suse.de> wrote:
> > What sound backend are you using?  PulseAudio?
> PulseAudio yes.
> 
> > Also, setting bdl_pos_adj=0 option makes any difference?
> No, the artifacts are still present.
> 
> The artifacts appear only with some applications, for example VLC and
> Skype have them but KDE's startup sound and music played in Amarok
> don't.

Do VLC and Skype also use PulseAudio, right?
Are these accessing PA natively, or through alsa-lib pulse plugin?

> The artifacts also go away after around 10 - 30 seconds of
> playback and happen again for some tens of seconds after restarting
> the application.
> 
> The alsa-info output is available at [1] for the working case and [2]
> for the broken case.
> 
> [1] http://www.alsa-project.org/db/?f=005f377cccf46c8093c4a640ace396313ffd8102
> [2] http://www.alsa-project.org/db/?f=b274a421ab04dab698b5d4d585dc7dbef06f7764
> 
> Does this help? Thanks,

It's hard to judge from alsa-info.sh in such cases, unfortunately.
The codec registers don't show any timing issues.

In anyway, I applied your patch now since it's specific to a certain
model, thus fairly safe to apply (and easy to revert).


thanks,

Takashi