What specifically did you try? Make sure the speakers aren't muted in veromix | kmix | alsamixer.
I just bought a second hand Toshiba Satellite S50-D and installed Ubuntu 14.04. Everything seems to be in working order, except my sound does not work.
When I plug in my headphones, the speakers stop, but nothing plays in the headphones. It's not just muted either. I've looked at alsamixer, but my headphones aren't muted either.