[Acer Aspire 6930g Virtual Surround Sound Driver Download
Hanne Rylaarsdam
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.
You can replace 80 with the desired crossover frequency (in Hz). Frequencies below this value will be sent to the LFE channel. Frequencies between 80Hz - 120Hz are generally recommended for the LFE crossover.
Disclaimer: This answer only applies if you actually have 5 true speakers and one true LFE (subwoofer). If your surround sound is "virtualized" using only two speakers, this is a software feature and not a hardware feature that can just be enabled.
In the case of "virtual" surround sound; if you need to download and install software from the manufacturer to get the feature to work on Windows, you will probably need to do the same on Linux/Ubuntu. If they only produce software for Windows, that means the manufacturer does not support the product's software features on Mac or Linux.
Also note that there are many ways to connect audio equipment and they are not created equally. Getting 6 distinct channels from your PC to 6 distinct speakers requires compatible DAC, ports, and cables. For example, the 3.5mm headphone port on your laptop is simply not capable of true 5.1 output, even though it can carry encoded streams like Dolby Digital.