Re: [sc-dev] Building From Source on Raspberry Pi

[Patrick Beard <pcbeard@xxxxxxx>]

On Nov 5, 2013, at 8:21 AM, Dan Stowell <danstowell+sc3@xxxxxxxxx> wrote:

I’ve been independently trying to test jack with ecasound. I can play a .wav
file with ecasound like this:

ecasound -i test.wav -o alsa

But with

ecasound -i test.wav -o jack

and jackd is running like this:

jackd -p 8 -d dummy

and alsa_out is running like this:

alsa_out -q1

No audio ever comes out.

I had that exact same problem on arm a while back. I'm afraid I just
stopped at that point. But that was before rpi even existed, so the
people playing with rpi probably know the answer.

I believe I’ve figured it out. I just noticed this error message from jackd:

Failed to connect to session bus for device reservation Unable to autolaunch a dbus-daemon without a $DISPLAY for X11

I’ve been trying to use jackd from the console without ever starting X. So, for a lark, I tried starting X inside my vncserver, and lo and behold jackd started with mplayer.

- Patrick