snd_hda sound driver bug?

Ariff Abdullah ariff at
Sat Mar 15 01:52:51 UTC 2008

On Fri, 14 Mar 2008 21:07:06 -0400
"eric baumbach" <embaumbach at> wrote:
> Hello,
> I was excited to see that with FreeBSD 7.0R my sound card should
> work natively under FreeBSD.  My chipset was listed in the man pages
> to be reported working ok.  (nVidia MCP51/Analog Devices AD1986A).
> I added the sound driver to /boot/loader.conf; snd_hda_load="YES"
> My sound card will still not work.  I have tried sending data files
> to /dev/dsp, playing audio cds and playing some X games all with no
> sound.
> The free OSS driver from ports does work, though not very good.
> I found a potential
> bug listed in the man pages as well for the snd_hda driver:
> "A few Hardware/OEM vendors tend to screw up BIOS settings, thus
> rendering the snd_hda driver useless, which usually results in a
> state where the snd_hda driver seems to attach and work, but without
> any sound."
> The BIOS I am using is AMI.
> I am running FreeBSD 7.0R on an ASUS A8M laptop with a stock kernel.
> Here is my current dmesg:


Thanks, but to avoid guessing too much, you need to show verbose
version of dmesg.

But first, try setting hint.pcm.0.config="eapdinv" throught
device.hints .

> Is there any possible workarounds I can try to keep testing my card
> and get the sound to work with this driver?
> Many Thanks
> Eric

Ariff Abdullah

... Recording in stereo is obviously too advanced
    and confusing for us idiot ***** users :P ........
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