[LAU] ALSA device/resource busy when using alsa-jack plugin

[James Morris]

On 29 December 2011 13:54, James Warden <warjamy at yahoo.com> wrote:
> Hello James,
>
> I have no problem with this (using the aloop trick of mine).
> Here is my command line:
>
>  ./arnold -fps 62 -soundplugin ALSA -kbdtype 0

What version of arnold are you using? The -fps option is unrecognised here.

I'm using the latest in Arch's AUR: arnold 2009.03.17-2
(also the most recent dl on berlios.de). Disabled Pulse in the PKGBUILD.

I've found it necessary to give it the ALSA option - which works when
nothing else is using sound, but I thought DMIX was supposed to take
care of things when something else was using sound?

When arnold successfully has sound, it blocks other programs from
using sound (ALSA).

Is there something in the ALSA API which means programs can block/be
blocked by the usage of DMIX? If so, are there reasons programs would
require to do so? Or could I just change the code to use the more
DMIX/ALSA-JACK-plugin friendly methods (assuming there are some)?

Cheers,
James






> I started arnold after the whole ALSA-bridge shebang.
>
> I attach a small sound sample I recorded in ardour from the "cloop" alsa_in
> client.
>
> You may have something blocking the sound device ?
>
> J.
>
>
> ________________________________
> From: James Morris <jwm.art.net at gmail.com>
> To: LAU <linux-audio-user at lists.linuxaudio.org>
> Sent: Thursday, December 29, 2011 12:18 PM
> Subject: [LAU] ALSA device/resource busy when using alsa-jack plugin
>
> Hi,
>
> I want to record some sound from arnold (a CPC emulator) which has
> ALSA output. Unfortunately when using the alsa-jack plugin, arnold
> says:
>
> Playback open error: Device or resource busy
>
> So I then tried the "Jack and Loopback device as Alsa-to-Jack bridge"
> as referenced in the JACK FAQ but still the same busy message.
>
> Does anyone know why the asoundrc trickery does not work for this
> application and if anything can be done?
>
> Arnold has not been developed since 2009 so I'm wondering if it is
> using a deprecated way of using ALSA?
>
>
>
>
> Cheers,
> James.
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