I have a geforce 8400GS and nvidia-current installed.
However, the Additional Drivers app advises that "No proprietary drivers are in use on this system" and that the driver is activated but not in use.
I know other people have complained about this problem, but for me this is breaking 3D content and I can't get compiz to work either.
When I try to start compiz manually (compiz --replace), I get this error:
My Xorg has nvidia as device driver.
compiz (code) - Fatal: Couldn't open display
I'm using the NVIDIA X Server settings program to setup my two monitors, so I know that this is what is in use.
In addition to the compiz problem (which I can get over), sometimes I can see the desktop background through the active window. It's hard to explain so I'll take a screenshot when it happens again.
Things I've tried:
1. Installing nvidia's latest drivers - The installer was extremely picky, constantly complaining about other modules and drivers. After I finally managed to remove everything it didn't like and install it, X wouldn't load.
2. Reinstall nvidia-current - tried multiple times with no change.
3. Link /usr/lib/xorg/modules/extensions/libglx.so to /usr/lib/nvidia-current/xorg/libglx.so.270.41.06 - didn't make a difference.
Any suggestions would be very welcome.