My Notes client failed to start on my new Fedora Linux with an error

error while loading shared libraries: 
libxcb.so.1: cannot open shared object file: No such file or directory "  

The shared library is however included in the /opt/ibm/notes/lib directory.

So I just added that directory to the /etc/ld.so.conf configuration :

include ld.so.conf.d/*.conf  
/opt/ibm/notes/lib  

Then, run

sudo ldconfig  

I probably should have created a separate file to put into /etc/ld.so.conf.d/ , but the end result is the same.
And it works fine now. Not sure if I have now introduced other problems though :-)