No Subwoofer in Ubuntu 19.04 5.1 Surround Sound problem

Hi I’m new to Ubuntu so I’ll try my best.

My problem is with my HTPC connected to my HomeTheater I’m unable to get the subwoofer work. (yes it work on all my other device, and it worked on the same PC with my previous W10 install)

So my pc is connected via HDMI to my (5.1) hometheater. I’ve try many thing but the result stay the same… no subwoofer.

  • with pavumeter (graphical) i use the sound setting (imbedded) to test every speakers, but no subwoofer

  • change the setting in etc/pulse/daemon.conf

    — enable-lfe-remixing to YES

    — default-sample-rate to 48000

    — default-sample-channel to 6

    — default-channel-map to front-left,front-right,rear-left,rear-right,front-center,lfe

  • change the setting in etc/pulse/default.pc

    — add the line #load-module module-combine channels=6 channel_map=front-left,front-right,rear-left,rear-right,front-center,lfe

Can someone help me? i also use this video to help me. (sound) https://www2.iis.fraunhofer.de/AAC/ChID-BLITS-EBU.mp4

My system is; i5-2400, GTX670, 8gb ram, 32gb ssd. with every update…