Just installed Ubuntu 15.10 on my HP ENVY to replace Windows 10. I really love it. The only problem is that the audio from the built in speakers sounds really muffled. I tried fixing the problem by using this solution I found threads on reddit and many solutions similar to it, but nothing worked. I decided to cut my losses and just use my external speakers, but even though the speakers are connected, the audio came out of the computer speakers. I just made the switch to Linux and everything seems awesome, Ubuntu blows Windows 10 out of the water, but this issue with the sound is really irksome.
My laptop: http://www.amazon.com/HP-17-j130us-17-3-Inch-Touchsmart-Laptop/dp/B00H7O3VI0
My speakers: Simple Audio Listen Bluetooth speakers.
I was connected directly via USB, not Bluetooth.