its called libxcb and apparently you need to install a verions 1.1 or higher and them (maybe) set an env variable. see this thread http://www.rawmaterialsoftware.com/juceforum/viewtopic.php?t=2263&sid=d0a6569c851b692602b735103e851f85 this might be what you want: http://hany.sk/~hany/RPM/libxcb-xlib.so.0.html