Amlogic S905X3, S905Y3, S905D3 thread

Anyone with an S905X3 can confirm that multichannel PCM works with the stable or even nightly build? I have a cheap X96 Air box with S905X3 SOC, but I could not get LPCM to work. Only left and right speakers are working. My settings are the following

  1. Audio output device: ALSA:AML-AUGESOUND, HDMI Multi Ch PCM
  2. Number of channels: 7.1 (tried 5.1 too)
  3. Output configuration: Best match (tried optimized and fixed too)
  4. Stereo upmix: off
  5. Allow passthrough: off

Multi channel PCM is supposed to be working according to this thread.