Same problem. Fresh install of 11.04 64-bit. Using recommended, current version NVIDIA accelerated graphics driver. "This driver is activated but not currently in use." No hardware acceleration works; neither the Unity desktop nor glxgears. Removing the NVIDIA additional driver and going back to the generic driver has things work fine (if not terribly speedy).
Same problem. Fresh install of 11.04 64-bit. Using recommended, current version NVIDIA accelerated graphics driver. "This driver is activated but not currently in use." No hardware acceleration works; neither the Unity desktop nor glxgears. Removing the NVIDIA additional driver and going back to the generic driver has things work fine (if not terribly speedy).
Using a NVIDIA GeForce GT 525M in a Dell XPS 15.
lspci | grep nVidia
01:00.0 VGA compatible controller: nVidia Corporation Device 0df5 (rev a1)