snd_envy24{,ht} recording support?

David Demelier demelier.david at
Tue Mar 19 14:20:01 UTC 2013

Unfortunately the snd_envy* drivers are very bad supported. It lacks a
lot of code to support the full card. I have had a card with a chip
that was *supported* (but not) by the driver and I didn't manage to
play any sound..

The current code of the driver is - I think - at early stages because
of lot of commented code so I guess the maintainer didn't have too
much time to spend on that.


2013/3/13 Yamagi Burmeister <lists at>:
> Hello.
> On Wed, 13 Mar 2013 02:19:55 +0000 (UTC)
> Benjamin Kaduk <bjk at> wrote:
>> I picked up the PR docs/166755 quite some time ago, intending to do some
>> research in the driver source and see which (all?) cards lack recording
>> support.  Per, recording support should not
>> be available for most/all versions of this card, yet the driver quite
>> clearly registers recording channels as available.
>> Just reading the driver source seems to be insufficient to determine
>> whether recording works, so I am hoping that some person or persons with
>> such a card would be able to check and possibly run a patched kernel for
>> getting debugging output.
> I've got an Audiotrak Prodigy HD2 - supported by snd_envy24ht - in my
> desktop system and can confirm that recording doesn't work. While the
> mixer shows the recording channels all I get is noise. On the playback
> site the mixer also shows a lot non working channels:
> Mixer vol      is currently set to  10:10
> Mixer bass     is currently set to  50:50
> Mixer treble   is currently set to  50:50
> Mixer synth    is currently set to   0:0
> Mixer pcm      is currently set to  50:50
> Mixer speaker  is currently set to   0:0
> Mixer line     is currently set to  75:75
> Mixer mic      is currently set to   0:0
> Mixer cd       is currently set to   0:0
> Mixer mix      is currently set to   0:0
> The only working channels are "vol" and "pcm". The equaliter channels
> "treble" and "bass" have no effect. "synth", "speaker", "mic", "cd"
> and "mix" result in: mixer: WRITE_MIXER: Device not configured
> I'm happy to provide some more information, just send me the patches
> to test.
> Ciao,
> Yamagi
> --
> Homepage:
> XMPP:      yamagi at

Demelier David

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