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To enable all channels, edit the file /etc/pulse/nf: uncomment default-sample-channels (ie remove the semicolon at the beginning of the line) and set it to 6 if you System 5.1 or 8, if your system is 7.1.Īfter making the changes, restart Pulseaudio. PulseAudio has no default settings for surround sound support.

Many people have a multi-channel sound cards, but use the speakers for the two channels. Often such programs will not mention Pulseaudio and will simply be called something generic like 'Sound Settings'. However, you may not need to install pavucontrol as most desktop environments have their own control panels for configuring Pulseaudio. It also allows you to change 'mixer' settings like headphone output, mic level, input device, and stereo versus surround sound profiles. Pavucontrol, an optional package for pulseaudio, allows you to make volume adjustments (entire system or per application). If the sound is registering in the vu vumetre of that program, then it is being routed through the pulse system. This can be checked by with pavucontrol (in the pavucontrol package). Pulseaudio becomes the default when the package is installed. If you need to install it manually, apt-get install pulseaudio should 'just work' in every release since Debian 6 (Squeeze).

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