/var/log/syslog tells :
---
kernel: [ 0.144719] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
systemd-udevd: Process '/sbin/crda' failed with exit code 249.
kernel: [ 0.144728] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
---
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: crda 3.13-1
ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
Uname: Linux 4.4.0-62-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Sun Feb 5 20:18:42 2017
InstallationDate: Installed on 2017-02-01 (3 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: crda
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.