subwoofer sound preferences problem

I'm having a problem with my Ubuntu and my subwoofer. It won't work until I go into sound preferences -> output tab and re-select the device. Two devices are displayed: 1: Internal Audio analog surround 5.1 (this is the one I have to use) 2: HDA NVidia Digital Stera (HDMI)

The problem is that this isn't something I have to do just once after boot. No, I have to do this everytime I want to listen to anything. IE: Whenever Rythmbox changes songs, the new song will not play through the subwoofer. I have to change the prefence on every single song. OR, whenever I watch a video, or open youtube, or do anything. And it's not really just the subwoofer. It's bass in general.

Basically, I can't even listen to music anymore because I always always always always have to re-set the sound preference on every song.

Now, I never had a problem before until I added a bluetooth adapter (dongle?) to my computer. After the drivers installed for that, my sound preferences won't work.

Why won't it just always work?

Please help if you can. Thanks.

Solution 1:

This is just a guess, but in /etc/pulse/daemon.conf set enable-lfe-remixing: no to yes and make sure it is not commented (has no semicolon in front of it). If you made changes, save them and restart your system (or just pulseaudio).