weston@Lenovo-Yoga-2-Pro:~$ dpkg -l xserver-xorg-core ; apt-cache policy xserver-xorg-core | pastebinit
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                           Version              Architecture         Description
+++-==============================-====================-====================-=================================================================
un  xserver-xorg-core              <none>               <none>               (no description available)