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40 lines
1.3 KiB
Markdown
40 lines
1.3 KiB
Markdown
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---
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title: ALSA → PulseAudio for Flash and others
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layout: default
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created: 2010-02-12 22:07:22 +0100
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updated: 2010-02-12 22:23:31 +0100
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toc: false
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tags:
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- know-how
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- software
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- linux
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- sound
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- alsa
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- pulseaudio
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---
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One huge problem in a standard Ubuntu install is that not all programs are actually using the PulseAudio daemon but
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instead still use ALSA. This is especially true with the [flashplugin](apt://flashplugin-installer). Since PulseAudio
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and ALSA can't use the hardware device at the same time, they block each other which leads to hangs and maybe even
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crashes of programs (e.g. browser).
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The fix is relatively easy and consists of telling ALSA to use its `pulse` plugin for output - which routes the sound
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to PulseAudio instead of directly to hardware. It is explained at [pulseaudio.org](http://pulseaudio.org/wiki/PerfectSetup#ALSAApplications).
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Basically you only have to create a file `/etc/asound.conf` with these few lines:
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~~~
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pcm.!default {
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type pulse
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}
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ctl.!default {
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type pulse
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}
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~~~
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This tells all ALSA apps to use the PulseAudio output by default. Some notes may also be found on [wiki.ubuntu.com](https://wiki.ubuntu.com/PulseAudio).
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You should also check that you have installed [libsdl1.2debian-pulseaudio](apt://libsdl1.2debian-pulseaudio) instead of the `-alsa` one.
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*[ALSA]: Advanced Linux Sound Architecture
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