neso@h110:~/.src/msdk/build$ ldconfig
/sbin/ldconfig.real: Can't create temporary cache file /etc/ld.so.cache~: Permission denied
neso@h110:~/.src/msdk/build$ sudo ldconfig
neso@h110:~/.src/msdk/build$ vainfo
error: can't connect to X server!
error: failed to initialize display