I'm not so much new to Linux, but I've never really messed around with it much so I can't troubleshoot any issues. I got a HP Pavilion Dv6 with a Synaptics touchpad. I've had ubuntu on this before with no issues. I had to reinstall after a hard drive crashed, I replaced it with an OEM drive and reinstalled 12.04, then upgraded up to 15.04.
I'm not sure if my track pad worked in 12.04 this time around, I was using a USB mouse while it upgraded. But all versions after that it does not work. Here's the thing that gets me. The computer WILL respond to the hard click buttons, and it WILL wake up if I touch the trackpad, but the cursor does not move. I'm using an external keyboard with a built in trackpad, and it's working just fine.
xinput list does show the trackpad as "SynPS/2 Synaptics TouchPad id=12 [slave pointer (2)]