Vsync issuse Nvidia Prime (Lenovo Y50 with GTX 860m)

Hello, I am writing to ask:
when can activate VSYNC in the graphics GXT XXXm using Nvidia Prime?
there is a plan to follow for implementation?
there is some kind of novelty about it?
there is hope that someone interested in solving the problem?

Ubuntu 14.04 Linux Driver NVIDIA 346.35. Lenovo Y50 with GTX 860m


Your problem is a duplicate of https://devtalk.nvidia.com/default/topic/775691/linux/vsync-issue-nvidia-prime-ux32vd-with-gt620-m-/

the problem will be reported again, because is the most important problem in the Nvidia drivers on Linux so far.