Eratta: Tegra Linux Driver Package R19.3

Section 2.12 of this document, page 8, refers to backing up libglx.so because of the possibility of overwriting the nVidia version via update of xserver. The location listed is:
/lib/xorg/modules/extensions/libglx.so

Actual location should be:
/usr/lib/xorg/modules/extensions/libglx.so

One edit: The document is actually the “Release Notes” of the above…not the driver document package itself.