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Johnny5ive
Asked: 2022-01-01 13:29:22 +0800 CST

No sound from 5.1 speakers?

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I checked the suggested questions1 2 but they don't help.

I have a 5.1 speaker system. 2 satellite speakers (front+left) + the subwoofer are working, but none of the other 3 satellite speakers I plug in are receiving sound.

All of the satellite speakers plug into the subwoofer and it's a new system.

alsamixer shows enter image description here

But sound is only coming from 2 speakers (front left+right) and not the other 3.

I don't think all of the 3 speakers are not working.

How can I trouble fix this?

Edit: Additional info: Connected by motherboard speaker jack: Asus B350M-A

Speaker system is a Creative SBS-580

Xubuntu 20.04.3

sound

1 Answers

  1. If your speakers connect to your computer with a single 3.5 mm jack, then you need to change your settings to "Stereo" (2-channel).

    The reason you must use stereo is because a single 3.5 mm jack can only carry 2 channels of uncompressed audio. While it can carry compressed streams like DTS and Dolby Digital, these compressed streams require a processor that can decrypt these streams on the receiving end. This is a common feature of A/V receivers, but not speaker kits like the one you have.

    If the speakers only have a single 3.5 mm jack to connect to your computer, then the speakers actually derive 5.1 channels from 2-channel audio. A 5.1 speaker system with only a single 3.5 mm jack isn't capable of receiving 6 distinct channels.

    Once you change your settings to stereo, you should be able to hear sound from all speakers. 5.1 channels should be derived from the two channel input.

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