Re: [LAU] perhaps why some of us have more trouble w/ pulseaudio than others (ICE1712/M-audio delta problem w/ pulseaudio)

From: rosea.grammostola <rosea.grammostola@email-addr-hidden>
Date: Mon May 10 2010 - 12:32:22 EEST

On Mon, 2010-05-10 at 09:52 +0200, Hartmut Noack wrote:
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> Am 10.05.2010 03:00, schrieb Fernando Lopez-Lezcano:
> > On Sat, 2010-05-08 at 18:23 -0400, Paul Davis wrote:
> >>
> >>
> >>
> >> Now that would be shocking I'd say. Since Suse 8.0 the ICE1712
> >> was
> >> always the most reliable chipset one could possibly find for
> >> Linux. So
> >> that would be a major regression and should be a show-stopper
> >> for alsa.
> >>
> >> BUT: the link points to a bug that affects puls audio and it
> >> affects it
> >> with a EWS88MT wich is one of the not-so typical ICE1712-cards
> >> like the
> >> EWX or the MAudio Audiophile and Delta-Series.
> >>
> >> So how about these cards and alsa/jack? Any trouble out there
> >> with
> >> bleeding-edge distros?
> >>
> >>
> >> my reading of this (and the related ALSA bug report) is that this is a
> >> Pulse-only bug, because its related to Pulse's attempt to provide a
> >> mapping of whatever-it-is-that-the-hw-provides into
> >> standard-things-that-users-can-know-and-love.
> >>
> >> JACK will just use the channels as single, undifferentiated channels
> >> and doesn't care about their names, function,etc. etc.
> >>
> >> i could be wrong in my assessment.
> >
> > I think you are correct. Pulse points to alsa as the culprit, alsa
> > ignores the issue, it may _not_ be an issue for alsa, I don't know.
>
>
> I agree with Paul. This is a problem with PA, alsa works as expected and
> perfectly OK with the envy24-chipset.
> Even if one likes to call it a "bug" that alsa presents all envy24-cards
> more or less the same though they are physically quiet different, I
> would call this a minor flaw since technically there is nothing broken here.
>
> Reading the thread on the PA-site I feel a bit uneasy. Lennart demands
> alsa to report a "front"-device wich is nonsense since AFAIK only the
> terratec 5.1 uses the envy24-chipset to produce a set of outputs for
> surround-speakers. All others are cards for musicians delivering 2+2,
> 4+2 ore more analogue/digital i/o ports that are all considered the
> same, delivering a pristine hifi-signal that the user is invited to send
> whatever source he/she likes to send to.
>
> What will PA do with a Delta 10x10? Trying to send "front" to the first
> 2, "rear" to the next 2, a lowpassed "sub" to the fith and then what?
>
> Why cant PA just offer a stereo-out for the first 2 ports of the envy
> and secondary stereo-outs for the rest plus a digital-out for the
> spdif-ports on these cards? Do they consider users, that spend quite
> some money on such a card, too stupid to find out, why the secondary
> stereo-outs do not deliver a signal with a MAudio audiophile?
> And NO! I would NOT consider it a progress, if alsa would start to tell
> me, that the first two ports of my MAudio would be "front-speaker-outs"
> for they are not.
>
> This musing about "broken" alsa-drivers that need to be "fixed" in the
> thread at PA increases the bad feeling about PA's relation and awarenes
> to pro-audio.

Or Lennart is just right and the driver in ALSA is not what it should be
for this card.

\r

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Received on Mon May 10 16:15:01 2010

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