Increasing Volume is not working for Surround Sound 5.1 setup

Dear Manjaro geniuses :slight_smile:

After posting the problem to r/ManjaroLinux on Reddit, I was adviced it might be a bug and that I should report here (Posting it in the Newbie Corner yielded only one answer with no reply and no solution):

I recently switched to Manjaro (xfce) from Xubuntu and I have connected a 5.1 Surround Sound system (brand: Medion). My PC has three 3.5 mm jacks (pink = microphone input or here center/subw. output; green = front output; blue = rear output).

Surround sound is working after selecting 6 channels in alsamixer.

The following changes were made to /etc/pulse/daemon.conf:


default-sample-channels = 6

default-channel-map = front-left,front-right,front-center,rear-left,rear-right,lfe

The problem:

When I use my mousewheel or my hotkeys on the keyboard to increase volume, it misbehaves and some sort of decreases the volume (see attached video). This problem is only present, when the channels have different volume.

Video of the problem:

Does anybody have an idea why this problem occurs?

I'd appreciate any help. If you need more information just ask. Thank you very much!

2 posts were merged into an existing topic: Surround Sound 5.1 increase Volume not working

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