Bad digital sound quality with HDA-intel AD1989B *with workaround*

Bug #553473 reported by Johannes on 2010-04-01
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)
Undecided
Unassigned

Bug Description

Using the digital optical output on my Asus P5Q-E, I get ugly crackling distortions on the higher frequencies. That is, the distortions can only be clearly heard while listening to piano music or music with similar high and clean notes. The error is there no matter what player or sound server is used.

*Workaround* Neverheless, the error can be easily addressed using the tool HDA-Analyzer:
http://git.alsa-project.org/?p=alsa.git;a=blob_plain;f=hda-analyzer/run.py;hb=HEAD

Simply running this program as root and in the entry "Node[0x02] AUD_OUT" disable and enable the checkbox called "enable" and suddenly my loudspeakers do not sound broken anymore.
This has to be done every time the alsa has restarted, which might only be when the system is restarted and for me once per month, so the problem is alot more irritating than applying the simple workaround.

Attachment: output from alsa-info.sh concerning my system, alsa-version, soundcard etc.

Johannes (johannes-claesson) wrote :
Raymond (superquad-vortex2) wrote :

does the internal spdif out work (add on spdif out board or spdif of asus hdmi graphic card) ?

Johannes (johannes-claesson) wrote :

Can't test that as I use neither. Bug is still unsolved though and the ugly workaround still works as of 12.10.

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