Hi there, I need help to configure Ubuntustudio on my machine

Pablo Fernandez pablo.fbus at gmail.com
Mon Apr 9 17:18:14 UTC 2012


> [1] is no link anymore. The webpage doesn't exists!

:( I hope it is back soon.

>
> Anyway:
> /etc/asound.conf doesn't exists.
> I commented out the line in ~/.asoundrc and rebooted. Now Jack starts, but
> with the onboard-Soundcard. I plugged in my Headphones into the onboard
> card, but still have no sound!

Well, if/when jack is started, only "jackified" applications or "jack
clients" will make sound.

In other words, you have to make sure that you can connect the app's
audio outputs to the "system" playbacks. (See the connect window of
qjackctl. In this context, "system" means the audio card that jack is
using).

The default sound server in ubuntu(studio) is pulseaudio.
Banshee/rhytmhbox, flashplayer in firefox, etc, are not "jackified" by
default. To solve this problem you have either to jackify the apps,
use other apps or enable some kind of bridge between pulseaudio (or
alsa) and jack.

As a quick test you can use a jack-friendly audio player, for example,
aqualung. Aqualung will know if jack is active and you will see it in
the connections window.

For the pulseaudio to jack bridge, follow the instructions here:

https://help.ubuntu.com/community/UbuntuStudioPreparation#Pulse_Audio

If you still have no sound from your onboard card, check playback
levels in alsamixer.


> Some days ago I read a post in a board about enabling the onboard-soundcard
> in the BIOS - I never touched the BIOS, except for installing operating
> systems from a USB-Stick. Could it be that I have to enable the ESI in the
> BIOS? I don't think so, but maybe you know more...

No


> I got a new, really confusing "error".
> I played around with jack. I selected hw:1,0 as Input device (which is the
> ESI)

Well, sometimes the ESI is hw:1, sometimes is hw:0. You can give
consistent numbers to the audio cards in a configuration file,
/etc/modprobe.d/alsa-base.conf. This is explained in alsa-project
site, multiple audio cards. As you noted, the site is down so, for the
time being, you will have to check every time in qjackctl setup or
name the card by name instead of by number.

> and hw:1,1 as output (which is also the ESI).

The first number is the card (Karte) number, which can change between
reboots. The second number is the device number (Gerät). See aplay -l.

According to arecord -l && aplay -l, the ESI has two devices, both of
them are duplex (they can record and playback at the same time) and
the second one (number 1) is digital, IEC958. To access the analog
inputs and outputs, you should choose hw:x,0 as input and output
devices, or once for both in the interface field. (hw:Juli should
default to hw:x,0 where x is the card number for the ESI).


Jack is running, BUT
> - no sound

Try aqualung, see above.


> - Status output tells me:
>    XRUN callback (1).
>    XRUN callback (39 skipped)
>
> The last line about 20 times, one time with "(41 skipped)" and one time with
> "(40 skipped)", than I halted Jack.

xruns can be caused for many different reasons. By now, increase the
frames/periods value.


BTW, if you don't mind waiting for three weeks or so, I hope
ubuntustudio 12.04 will give you a much better first time experience.


Cheers, Pablo



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