Comment 10 for bug 552653

Command's output is in Italian, sorry (fortunatly Alberto will understand :D )

1) x@serverona:~$ update-alternatives --display gl_conf
gl_conf - modalità manuale
 il collegamento attualmente punta a /usr/lib/nvidia-current/ld.so.conf
/usr/lib/mesa/ld.so.conf - priorità 500
 slave xorg_extra_modules: /usr/lib/xorg/x11-extra-modules
/usr/lib/nvidia-current/ld.so.conf - priorità 9700
 slave libvdpau_nvidia.so: /usr/lib/nvidia-current/vdpau/libvdpau_nvidia.so
 slave libvdpau_nvidia.so.1: /usr/lib/nvidia-current/vdpau/libvdpau_nvidia.so.1
 slave libvdpau_nvidia.so.1_lib32: /usr/lib32/nvidia-current/vdpau/libvdpau_nvidia.so.1
 slave libvdpau_nvidia.so_lib32: /usr/lib32/nvidia-current/vdpau/libvdpau_nvidia.so
 slave man_nvidiaxconfig.gz: /usr/share/man/man1/alt-nvidia-current-xconfig.1.gz
 slave nvidia-autostart.desktop: /usr/share/nvidia-current/nvidia-autostart.desktop
 slave nvidia-smi.1.gz: /usr/share/man/man1/alt-nvidia-current-smi.1.gz
 slave nvidia_bug_report: /usr/lib/nvidia-current/bin/nvidia-bug-report.sh
 slave nvidia_desktop: /usr/share/nvidia-current/ubuntu-nvidia-settings.desktop
 slave nvidia_drv: /usr/lib/nvidia-current/xorg/nvidia_drv.so
 slave nvidia_modconf: /usr/lib/nvidia-current/modprobe.conf
 slave nvidia_smi: /usr/lib/nvidia-current/bin/nvidia-smi
 slave nvidia_xconfig: /usr/lib/nvidia-current/bin/nvidia-xconfig
 slave xorg_extra_modules: /usr/lib/nvidia-current/xorg
 slave xvmcconfig: /usr/lib/nvidia-current/XvMCConfig
La versione "best" attuale è /usr/lib/nvidia-current/ld.so.conf.

2) x@serverona:~$ ldconfig -p | grep GL
 libGLcore.so.1 (libc6) => /usr/lib/nvidia-current/libGLcore.so.1
 libGLU.so.1 (libc6) => /usr/lib/libGLU.so.1
 libGL.so.1 (libc6) => /usr/lib/nvidia-current/libGL.so.1
 libGL.so (libc6) => /usr/lib/nvidia-current/libGL.so

3) x@serverona:~$ ls -l /etc/alternatives/nvidia_modconf
lrwxrwxrwx 1 root root 37 2010-04-06 15:57 /etc/alternatives/nvidia_modconf -> /usr/lib/nvidia-current/modprobe.conf