[alsa-devel] Intel HDA digital out distortion

[pr0t0cod7]

Le Tue, 09 Oct 2007 11:49:30 +0200,
Takashi Iwai <tiwai at suse.de> a écrit :

> At Wed, 3 Oct 2007 22:18:46 +0200,
> pr0t0cod7 wrote:
> > 
> > Hi,
> > 
> > On Monday 23 July 2007 23:09:24 Ingmar Stieger wrote:
> > 
> > > a couple of weeks ago, I bought an ASUS mainboard with integrated
> > > Intel
> > > HDA and an AD1988B codec. Unfortunately, the digital / SPDIF
> > > output gets distorted with stock 1.0.14 drivers. It does not
> > > matter what the volume levels of the various mixers are set to.
> > 
> > I have the same issues.
> > 
> > Any sound is distorted through spdif output (seems more pronounced
> > with low frequencies.)
> > 
> > Sound is not distorted:
> >  - using passthough (playing AC3)
> >  - when volume is set to the very minimal (no perceptible
> > distortion)
> >  - with analog output
> > 
> > My motherboard: ASUS P5B deluxe with integrated soundchip
> > Kernel: 2.6.22
> > Alsa: Intel HD audio kernel built module
> > asound.conf: http://pastebin.com/f2c54b47b
> > 
> > > I think I might have found the source for this problem. Maybe it's
> > > only a workaround, but it solved the issue and digital out now
> > > works fine for me, so I thought I'd share.
> > 
> > The patch worked for me, no more distortion :)
> > Thanks for sharing,
> > Alex.
> 
> Could you check whether the problem got fixed with ALSA 1.0.15rc3?
> 
> 
> thanks,
> 
> Takashi

Works perfect with 1.0.15rc3.

Thanks,
Alex.