I can't get sound working properly with Mint 14 (Cinnamon 64-bit). I'm using an old AMD 780g motherboard (Foxconn A7GM-S 2.0) with integrated sound (Realtek ALC888GR). It works perfectly well with Windows 7 so the hardware isn't at fault. The device is detected and sound does work, but very poorly (crackles & skips). When I open the sound mixer (pulse or alsa) I can see the audio output rapidly cycling between "analog stereo output" and "headphones". None of the options in any of the mixer applications solves the problem.
Perhaps it's a problem with jack sensing? I will happily disable that feature for working sound if that's even possible. Any suggestions?