Re: [LAU] Confusing qjackctl playback devices, no jackd output

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To: Roberto Suárez Soto <talkingxouba@...>
Cc: linux-audio-user <linux-audio-user@...>
Date: Tuesday, July 8, 2014 - 12:12 pm

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On Tue, Jul 8, 2014 at 8:03 AM, Roberto Su=C3=A1rez Soto
wrote:

> Hi,

e
s
d

I have two systems which work the same way. Where the first two channels
shows up depends on precisely which device (hw:N,n) is opened. With one
version, they show up on 7&8 (the default hw:0,0) and with the other on 1&2
(can't recall the precise device incarnation).

Its sort of a feature of ALSA, and sort of a really bad piece of
non-user-oriented design thinking.

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On Tue, Jul 8, 2014 at 8:03 AM, Roberto Su=C3=A1rez Soto <ta=
lkingxouba@gmail.com
> wrote:
Hi,

=C2=A0 =C2=A0 recently something weird happened. As usual in this cases, I&=
#39;m not aware of making any changes, this happened all without my interve=
ntion. This reinforces my theory of a leprechaun infestation at home, but I=
'll leave that for another mailing list.

=C2=A0 =C2=A0 The symptoms: I launch qjackctl, start jackd, and then hydrog=
en. When I hit "play", there is no sound. There are no errors in =
qjackctl's message window, and hydrogen is playing nicely (vu meters ar=
e going up and down as if nothing happened).

=C2=A0 =C2=A0 After messing around for a while, I found that I could make h=
ydrogen sound again changing the connections in qjackctl "Connections&=
quot; window: instead of connecting the two outputs of hydrogen to "pl=
ayback_1" and "playback_2" (which is the default as soon as =
hydrogen is started), I connected them to "playback_7" and "=
playback_8". I have a built-in HDA-intel sound card, and I believe tha=
t these outputs are "side-left" and "side-right". But I=
had never had to do this, playback_1 and playback_2 always worked. I'm=
using headphones, in case that's important.
I have two systems which work the same way=
. Where the first two channels shows up depends on precisely which device (=
hw:N,n) is opened. With one version, they show up on 7&8 (the default h=
w:0,0) and with the other on 1&2 (can't recall the precise device i=
ncarnation).
=C2=A0Its sort of a feature of ALSA, and sort of =
a really bad piece of non-user-oriented design thinking.

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Messages in current thread:
[LAU] Confusing qjackctl playback devices, no jackd output, Roberto Suárez Soto, (Tue Jul 8, 12:04 pm)
Re: [LAU] Confusing qjackctl playback devices, no jackd output, Paul Davis, (Tue Jul 8, 12:12 pm)