I just installed Ubuntu 11.10 on my ASUS N43SL laptop and Unity 3D loaded right after installation.
But upon reboot, I noticed that Ubuntu loaded Unity 2D instead of Unity 3D. I logged-off and made sure I had "Ubuntu" selected during login, but after many attempts Unity 3D just won't load.
Just to make it definite, I did
echo $DESKTOP_SESSION on the terminal and it says
ubuntu-2d, which is not expected.
My laptop runs on i5 with 1Gb NVIDIA GT540M so I don't think its a case of lacking graphics capability. And yes, I have installed the proprietary driver using "Additional Drivers" in "System Settings".
What can be the cause of this problem? How can it be fixed?