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SND_DUMMY(4) Kernel Interfaces Manual SND_DUMMY(4) NAME snd_dummy -- Dummy audio driver SYNOPSIS To load the driver at boot time, place the following line in loader.conf(5): snd_dummy_load="YES" DESCRIPTION The snd_dummy driver implements a virtual testing device, meaning it does not correspond to a physical sound card. It is intended for test- ing, so that test programs do not need to rely on hardware being present in the machine in order to run. The driver attaches as a regular PCM device, with two channels (one playback and one recording), as well as a mixer. Playback works by discarding all input, and recording by returning si- lence (zeros). SEE ALSO sound(4), loader.conf(5), loader(8) AUTHORS The snd_dummy driver was implemented by Christos Margiolis <christos@FreeBSD.org> under sponsorship from the FreeBSD Foundation. CAVEATS Because the driver automatically attaches once the module is loaded, it can only be attached once. FreeBSD 13.2 July 15, 2024 SND_DUMMY(4)
NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHORS | CAVEATS
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