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docs: Review Raspi sound quality howto

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Stein Magnus Jodal 2013-05-11 18:40:08 +02:00
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docs/installation/raspberrypi.rst
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@ -79,12 +79,12 @@ As of about April 2013 the following steps should resolve any audio
issues for HDMI and analog without the use of an external USB sound
card.
#. Ensure you system is up to date, for debian based systems run::
#. Ensure your system is up to date. On Debian based systems run::
sudo apt-get update
sudo apt-get full-upgrade
#. Ensure you have a new enough firmware, on debian based systems
#. Ensure you have a new enough firmware. On Debian based systems
`rpi-update <http://apt.mopidy.com://github.com/Hexxeh/rpi-update>`_
can be used.
@ -100,35 +100,34 @@ card.
card 0
}
Note that if you have an ``asoundrc`` it will overide
any global settings.
Note that if you have an ``~-/.asoundrc`` it will overide any global
settings from ``/etc/asound.conf``.
#. Update your ``~/.config/mopidy/mopidy.conf`` to contain::
[audio]
output = alsasink
This is to tell GStreamer not to pick Jack which it seems to like
picking on RaspberryPis for some reason.
This is to tell GStreamer not to pick Jack which it seems to like picking on
Raspberry Pis for some reason.
Following these steps you should be able to get crackle free sound on either
HDMI or analog. Note that you might need to ensure that PulseAudio is no longer
running to get this working nicely.
Following these steps you should be able to get crackle free sound on
either HDMI or analog. Note that you might need to ensure that pulse
is no longer running to get this working nicely.
This recipe has been confirmed as working by a number of users on our issue
tracker and IRC. As a reference, the following versions where used for testing
this, however all newer and some older version are likely to work as we have
not determined the exact revision that fixed this::
This recipe has been confirmed as working by a number of users on our
bug tracker and irc. As a reference, the following versions where used
for testing this, however all newer and some older version are likely
to work as we have not determined the exact revision that fixed this::
$ uname -a
Linux raspberrypi 3.6.11+ #408 PREEMPT Wed Apr 10 20:33:39 BST 2013 armv6l GNU/Linux
$ uname -a
Linux raspberrypi 3.6.11+ #408 PREEMPT Wed Apr 10 20:33:39 BST 2013 armv6l GNU/Linux
$ /opt/vc/bin/vcgencmd version
Apr 25 2013 01:07:36
Copyright (c) 2012 Broadcom
version 386589 (release)
$ /opt/vc/bin/vcgencmd version
Apr 25 2013 01:07:36
Copyright (c) 2012 Broadcom
version 386589 (release)
The only remaining known issues is a slight gap in playback at track
changes this is likely due to gapless playback not being implemented
and is being worked on irrespective of raspi related work.
The only remaining known issue is a slight gap in playback at track changes
this is likely due to gapless playback not being implemented and is being
worked on irrespective of Raspberry Pi related work.