diff -up src/sage/geometry/polyhedron/base.py.orig src/sage/geometry/polyhedron/base.py
--- src/sage/geometry/polyhedron/base.py.orig	2018-05-16 13:31:55.930138769 -0600
+++ src/sage/geometry/polyhedron/base.py	2018-05-16 13:35:12.219428900 -0600
@@ -4281,9 +4281,6 @@ class Polyhedron_base(Element):
 
              David Avis's lrs program.
         """
-        if not is_package_installed('lrslib'):
-            raise PackageNotFoundError('lrslib')
-
         from sage.misc.temporary_file import tmp_filename
         from subprocess import Popen, PIPE
         in_str = self.cdd_Vrepresentation()