quick solution for undefined symbol: _XEatDataWords
3.
tux@slitaz:~$ ldd -r /opt/VirtualBox/VirtualBox.so
linux-gate.so.1 (0xb776f000)
libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0xb6d2a000)
libxcb.so.1 => /opt/VirtualBox/libxcb.so.1 (0xb6d0f000)
libXext.so.6 => /usr/lib/libXext.so.6 (0xb63b3000)
libX11.so.6 => /opt/VirtualBox/libX11.so.6 (0xb6297000)
libX11-xcb.so.1 => /opt/VirtualBox/libX11-xcb.so.1 (0xb4c51000)
1. legacy libraries tux@slitaz:~$ ls -l /opt/VirtualBox/lib[Xx]* lrwxrwxrwx 1 root root 34 Jan 15 06:59 /opt/VirtualBox/libX11.so.6 -> /opt/VirtualBox/legacy/libX11.so.6 lrwxrwxrwx 1 root root 38 Jan 15 06:59 /opt/VirtualBox/libX11-xcb.so.1 -> /opt/VirtualBox/legacy/libX11-xcb.so.1 lrwxrwxrwx 1 root root 34 Jan 15 06:59 /opt/VirtualBox/libxcb.so.1 -> /opt/VirtualBox/legacy/libxcb.so.1 tux@slitaz:~$ ls -l /opt/VirtualBox/legacy/ total 1240 -rwxr-xr-x 1 root root 1156136 Aug 9 2016 libX11.so.6 -rwxr-xr-x 1 root root 2852 Aug 9 2016 libX11-xcb.so.1 -rwxr-xr-x 1 root root 105704 Aug 9 2016 libxcb.so.1 2. delete link tux@slitaz:~$ sudo rm -f /opt/VirtualBox/lib[Xx]* 3. link xorg libraries tux@slitaz:~$ sudo ln -s /usr/lib/libX11.so.6.3.0 /opt/VirtualBox/libX11.so.6 tux@slitaz:~$ sudo ln -s /usr/lib/libX11-xcb.so.1.0.0 /opt/VirtualBox/libX11-xcb.so.1 tux@slitaz:~$ sudo ln -s /usr/lib/libxcb.so.1.1.0 /opt/VirtualBox/libxcb.so.1 tux@slitaz:~$ ls -l /opt/VirtualBox/lib[xX]* lrwxrwxrwx 1 root root 24 Jan 15 07:11 /opt/VirtualBox/libX11.so.6 -> /usr/lib/libX11.so.6.3.0 lrwxrwxrwx 1 root root 28 Jan 15 07:12 /opt/VirtualBox/libX11-xcb.so.1 -> /usr/lib/libX11-xcb.so.1.0.0 lrwxrwxrwx 1 root root 24 Jan 15 07:13 /opt/VirtualBox/libxcb.so.1 -> /usr/lib/libxcb.so.1.1.0 tux@slitaz:~$
4. that's it.