How to Disable Overlay Scrollbars in Ubuntu

Looking back, I don't know why I put up with Ubuntu's overlay scrollbars for so long... they're just that awful.  Your mouse must be in just the right spot to catch the scrollbar, and forget about paging down click by click.

So this morning I decided to just get rid of them.  Turns out it's easy.  Just add this line of code:

export LIBOVERLAY_SCROLLBAR=0

to the file

/etc/X11/Xsession.d/99disable-overlay-scrollbars

for global removal (you may need to create that file).  To disable only on a user-by-user basis, enter the same text in the user's file:

~/.xprofile