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I have Dolby Virtual Surround Sound 5.1 speakers with Tuba CineBass Subwoofer on Acer laptop (mine is 5951G but there is also bunch of models with similar configuration of speakers with/without subwoofer). In Windows it works and sounds amazingly after installing both Realtek drivers and Dolby software from Acer support site. In Ubuntu only 2-channel sound is working.

How can I enable virtual 5.1 sound or at least subwoofer?

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