Переключение между версиями драйвера nvidia на 16.04

svn co http://root.cern.ch/svn/root/branches/v5-34-00-patches/cint cint
cd cint
sudo apt-get install libreadline-dev
./configure --readlinelib=/lib/x86_64-linux-gnu/libreadline.so.6.2 --prefix=/usr/local

make
sudo make install
sudo ln /usr/local/lib/libCint.so /usr/lib/libCint.so

el@apollo:~/foo/cint$ cint

cint : C/C++ interpreter  (mailing list 'root-cint@cern.ch')
   Copyright(c) : 1995~2010 Masaharu Goto (gotom@hanno.jp)
   revision     : 5.18.00, July 2, 2010 by M.Goto

No main() function found in given source file. Interactive interface started.
'h':help, 'q':quit, '{statements;}' or 'p [expr]' to evaluate

cint> sin(1.2);
(const double)1.19999999999999996e+00

cint> printf("ok");
(const char* 0x16bef60)"ok"