I set 5.1 on the sound options under Ubuntu, but I don't get centerbox and subwoofer output when I click to the test buttons (soundspeakers grafiks).
When I work under Win 7 every speakers works properly.
How can I improve or check my drivers of Ubuntu? Is there a Driver from Alsa I can use it to get work all speakers (5.1) under Ubuntu?
Please HELP, I don't have knowledge on Ubuntu quite well.