docky crash after waking up from reopen lid

Every time I wake up my laptop from suspend which is after close of lid, the docky crashed always

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: docky 2.2.0-2
ProcVersionSignature: Ubuntu 3.16.0-55.74~14.04.1-generic 3.16.7-ckt19
Uname: Linux 3.16.0-55-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Dec 10 20:31:10 2015
InstallationDate: Installed on 2015-11-30 (9 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
SourcePackage: docky
UpgradeStatus: No upgrade log present (probably fresh install)