Comment 13 for bug 771788

Opposed to what Forlong states in post #12 I only have nVidia loaded:

$ grep drv\.so /var/log/Xorg.0.log
[ 43.835] (II) Loading /usr/lib/xorg/extra-modules/nvidia_drv.so
[ 43.983] (II) Loading /usr/lib/xorg/extra-modules/nvidia_drv.so
[ 47.174] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 47.228] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 47.261] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 47.265] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 47.276] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 47.298] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 47.312] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 47.329] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[ 47.344] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[ 47.511] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so

In my case it is (I assume) because of the same reason as posted by Pako, have the same result with lshw -C display, in post #9:
$ /usr/lib/nux/unity_support_test -p
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce Go 7300/PCI/SSE2
OpenGL version string: 2.1.2 NVIDIA 270.41.06

Not software rendered: yes
Not blacklisted: no
GLX fbconfig: yes
GLX texture from pixmap: yes
GL npot or rect textures: yes
GL vertex program: yes
GL fragment program: yes
GL vertex buffer object: yes
GL framebuffer object: yes
GL version is 1.4+: yes

Unity supported: no