Followup > a force overwrite gave me correct glx
sudo dpkg --force-overwrite -i /var/cache/apt/archives/nvidia-glx-177_177.70-0ubuntu1_i386.deb
glxinfo OK
Followup > a force overwrite gave me correct glx
sudo dpkg --force-overwrite -i /var/cache/ apt/archives/ nvidia- glx-177_ 177.70- 0ubuntu1_ i386.deb
glxinfo OK