Hello, Created Null sink with sample spec 44100/8Ch/s16le and channel_map as channel_map=front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right. When recorded null sink monitor output, we are able to observe data in 6 ch only, and the rest of the two channels' complete silence is observed. More details can be found at https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/1275 Need inputs on resolving this issue. Thanks, Vijendar