I'm a new user of Ubuntu, and a relatively new user of Linux in general. I recently switched from Ubuntu MATE to the latest version of Ubuntu released on Ubuntu's official page, due to less support for MATE than Ubuntu, and for the reason that I was having sound issues in MATE.
At first, it was just my headphone jack that wouldn't work. I searched the web for solutions, and eventually got them working. Unfortunately I don't remember how I accomplished this, I just remember that I did. All sound worked fine for the next couple days, but then the headphone jacks just suddenly didn't work again. Once again, I searched the internet for solutions. After attempting something I found (I believe it was altering the alsa-base.conf file), the sound just died altogether. Since then, nothing has worked.
Things I've tried:
Alsa reload and alsa force-reload (Many times)
Unmuting everything in alsamixer
The solution found here
Changing volume settings in Sound
I'm on an Alienware 15R2, with a Sound Blaster 3Di sound card. For some reason in alsamixer it shows my card as an "HDA Intel PCH". I don't know if this has anything to do with it, but this is something I suspect could be the issue.
Output of lspci -v | grep -i audio:
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
Subsystem: Dell Sunrise Point -H HD Audio
Any help is appreciated, thank you!
