nV News Forums - View Single Post - glX VSYNC does not work with ACER GD245HQ

**AaronP** · 10-31-10, 12:29 AM

Are you running a composite manager?

Also, unless you're using a Quadro with the Unified Back Buffer enabled, the hardware can't use flipping to guarantee that SwapBuffers actually happens during vblank unless your window is full-screen. It's possible that the 120 Hz mode has too short of a vblank for the hardware to perform the swap before the screen starts scanning out the new frame.

10-31-10, 12:29 AM	#4
AaronP NVIDIA Corporation Join Date: Mar 2005 Posts: 2,487	Re: glX VSYNC does not work with ACER GD245HQ Are you running a composite manager? Also, unless you're using a Quadro with the Unified Back Buffer enabled, the hardware can't use flipping to guarantee that SwapBuffers actually happens during vblank unless your window is full-screen. It's possible that the 120 Hz mode has too short of a vblank for the hardware to perform the swap before the screen starts scanning out the new frame.