Both PCs have very similar software environment so that doesn't help much I guess. I also run some more tests just to make sure. I tested 3 different video files on both PCs in Totem player and mplayer2 with 2 different video outputs in case of mplayer, namely xv and vdpau. No matter which file or which player/video output I used, I observed consistent tearing in Unity 2D and did not observe tearing in Unity 3D.
I posted apport information from both PCs. First one is my desktop, second is laptop.
Desktop:
GeForce GTX 460
nvidia driver 280.13 (from nvidia-current package)
Laptop: current- updates package)
GeForce 9600M GT
nvidia driver 280.13 (from nvidia-
Both PCs have very similar software environment so that doesn't help much I guess. I also run some more tests just to make sure. I tested 3 different video files on both PCs in Totem player and mplayer2 with 2 different video outputs in case of mplayer, namely xv and vdpau. No matter which file or which player/video output I used, I observed consistent tearing in Unity 2D and did not observe tearing in Unity 3D.