Adding a blurb like this was forgotten in 2009. Signed-off-by: Olaf Hering <olaf@xxxxxxxxx> --- docs/formatdomain.rst | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst index d4f30bb8af..f07ea34232 100644 --- a/docs/formatdomain.rst +++ b/docs/formatdomain.rst @@ -7079,6 +7079,20 @@ is permitted with the following attributes. The audio format, one of ``s8``, ``u8``, ``s16``, ``u16``, ``s32``, ``u32``, ``f32``. The default is hypervisor specific. +Note: +If no ``<audio/>`` element is defined, and the ``graphics`` element is set to +either 'vnc' or 'sdl', the libvirtd or virtqemud process will honor the following +environment variables: + +* ``SDL_AUDIODRIVER`` + + Valid values are 'pulseaudio', 'esd', 'alsa' or 'arts'. + +* ``QEMU_AUDIO_DRV`` + + Valid values are 'pa', 'pulseaudio', 'none', 'alsa', 'coreaudio', 'jack', + 'oss', 'sdl', 'spice' or 'file'. + None audio backend ^^^^^^^^^^^^^^^^^^
