Sounds issues with Ubuntu 14.04lts

So For a while I've been having an issue with sound output in linux.

Since I installed it, I have had this issue with 5.1 analog surround sound and stereo outputs not working. Essentially, the front two speakers do not work at all. In fact, the center speaker ( which is plugged into the center speaker port acts as the front left and front right speaker when the audio mode is set to stereo output. when in 5.1 out put the center speaker works correctly bu the front left and right speakers are now completely off. I've checked the speaker audio levels but it sounds more like a drivers issue. I have windows 10 ( will all the garbage remove ) and the speakers work perfectly on there.

I actually just tried to get it working about 4 hours ago, IT WORKED. Then, I had to go and screw up the NVIDIA drivers and I had to go and purge nvidia*, after that It didnt work anymore.

I've tried this tutorial and noth9ing happened except for unity installing itself again. I prefer Gnome

Any hlep would be appreciated. I am about a middle schooler in terms of linux knowledge so try to explain like im 5 if you can.

Specs

-Computer-
Processor : 12x Intel(R) Core(TM) i7-5820K CPU @ 3.30GHz
Memory : 16332MB (2190MB used)
Operating System : Ubuntu 14.04.3 LTS
User Name : XXXX
Date/Time : Fri 16 Oct 2015 01:37:22 AM PDT
-Display-
Resolution : 2560x1440 pixels
OpenGL Renderer : GeForce GTX 980 Ti/PCIe/SSE2
X11 Vendor : The X.Org Foundation
-Multimedia-
Audio Adapter : HDA-Intel - HDA Intel PCH
Audio Adapter : USB-Audio - AT2020 USB
Audio Adapter : HDA-Intel - HDA NVidia
Audio Adapter : USB-Audio - HD Pro Webcam C920
Audio Adapter : USB-Audio - SMSL M2
-Input Devices-
Power Button
Power Button
ROCCAT ROCCAT Tyon Black
ROCCAT ROCCAT Tyon Black
ROCCAT ROCCAT Tyon Black
S.M.S.L SMSL M2
HD Pro Webcam C920
HDA Intel PCH Front Mic
HDA Intel PCH Rear Mic
HDA Intel PCH Line
HDA Intel PCH Line Out Front
HDA Intel PCH Line Out Surround
HDA Intel PCH Line Out CLFE
HDA Intel PCH Front Headphone
Eee PC WMI hotkeys
HDA NVidia HDMI/DP,pcm : 3=
HDA NVidia HDMI/DP,pcm : 7=
HDA NVidia HDMI/DP,pcm : 8=
HDA NVidia HDMI/DP,pcm : 9=
ckb1: Corsair K70 RGB Gaming Keyboard
-Printers (CUPS)-
WorkForce-645
-SCSI Disks-
ATA HGST HDN724040AL
ATA Hitachi HDS72202
ATA Corsair Neutron
ATA OCZ-VERTEX3
ATA WDC WD1001FALS-4
-BIOS-
Date : 08/10/2015
Vendor : American Megatrends Inc. (www.ami.com)
Version : 1901
-Board-
Name : X99-DELUXE
Vendor : ASUSTeK COMPUTER INC. (SEAGATE, www.seagate.com)