Black screen when I open an application

[Mehdi Hassanpour]

I've upgraded to Ubuntu 14.04 and I see a full black screen for a second when I open each application...

The hardware is: NVIDIA Corporation G86 [GeForce 8400 GS] (rev a1)

Using NVIDIA binary driver 331.38 from Additional Drivers

[Mehdi Hassanpour (mehdi)]

I've reset compiz and unity but no help...

dconf reset -f /org/compiz/
setsid unity

[Mehdi Hassanpour (mehdi)]

I changed the Graphics Card and the driver, everything looks fine now...

current vga card is: VGA compatible controller: NVIDIA Corporation NV44 [GeForce 6200 TurboCache] (rev a1)

and the driver: Nvidia 304.117

I'm not sure the issue was with Nvidia driver or compiz

[Mehdi Hassanpour (mehdi)]

Changed the graphics card to "NVIDIA Corporation G86 [GeForce 8400 GS] (rev a1)" with Nvidia driver 304.117 again black screen for seconds...

[Mehdi Hassanpour (mehdi)]

As a workaround, I un-ticked the "Allow Flipping" box under OpenGL settings of the NVIDIA x Server Settings.