New kernel 4.4.0-34 kills xfce4-power-manager

I use 64 bit Ubuntu but run LXDE as my desktop environment. I installed xfce4-power-manager to show the status of my UPS. It worked great until I installed the 4.4.0-34 kernel. Now the power icons don't show, and if I try to start the program manually, I get a popup saying that communication can't be established.

Rolling back to 4.4.0-31 fixed it, so staying there for now.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-4.4.0-31-generic 4.4.0-31.50~14.04.1
ProcVersionSignature: Ubuntu 4.4.0-31.50~14.04.1-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: amd64
CurrentDesktop: LXDE
Date: Tue Aug 9 14:56:11 2016
InstallationDate: Installed on 2015-03-03 (524 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-lts-xenial
UpgradeStatus: No upgrade log present (probably fresh install)