My TV is an LG passive 3DTV - 2014 model - all was well with my setup listed above.
Just upgraded to Windows 8.1 and also PowerDVD 14 and now 3d does not work.
With powerdvd 11 / win 7, playing a 3d blu ray used to auto set the TV into 3d mode, but with powerdvd 14 / win 8.1 it just plays the film as if it is 2d.
I've already downgraded my other PC back to win 7 as the AMD card no longer suppoerted blu ray with win 8.1, looks like I'll be downgrading back to Win 7 / PowerDVD11 and cancelling the subscription to Powerdvd 14!!