Hallo, I've this problem.
When watching old movie (2.0 audio) the sound come only from my Central and no sound from Front or Rear.
I have a Pi5 with HDMI cable to my A/V receiver YAMAHA. Number of channel is set to 2.0 and Passthrough enabled. The multichannel audio is very good but with the stereo source is not. Audio output device is set to: ALSA: vc4-hdmi-0 SAM SAMSUNG on HDMI. Stereo upmix is enabled.
Have you any solution to hear 2.0 in 5.1 upmixing?
Thank you
