  We show the existence of a full exceptional collection in the graded stable
derived category of a Gorenstein isolated quotient singularity using a result
of Orlov (arXiv:math/0503632). We also show that the equivariant graded stable
derived category of a Gorenstein Veronese subring of a polynomial ring with
respect to an action of a finite group has a full strong exceptional
collection, even if the corresponding quotient singularity is neither isolated
nor Gorenstein.
