suspend not working

[xeon]

My computer cannot go to suspend state. The monitor switch off but the cpu/cpu fan keeps running and the hard drive is active.
It doesn't respond, I need to switch off manually to reboot the system.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pm-utils 1.4.1-16
ProcVersionSignature: Ubuntu 4.4.0-18.34-generic 4.4.6
Uname: Linux 4.4.0-18-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Apr 15 18:42:49 2016
InstallationDate: Installed on 2016-04-15 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160414)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=hu
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=hu_HU.UTF-8
 SHELL=/bin/bash
SourcePackage: pm-utils
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Gary Holmlund (gary-holmlund)]

I am having the same issue. I first tried with Ubuntu Gnome 16.04 and then with Ubuntu 16.04. Both have the same issue. Doing "sudo pm-hibernate" can duplicate the issue. I am attaching a report from lshw. My computer is a HP Pavilion dv7.

[Jean-Max Reymond (jmreymond-free)]

same issue with HP Pavilion dv6.
Same issue than #1570899 ?

[Cody Seal (cseal6)]

Same issue on an Acer E5-575G

[Michael Hathaway (mwhathaway)]

This just started happening on my Lenovo Yoga. All worked fine previously. Something is causing the computer to turn back on a few seconds after going into suspend

[Jean-Max Reymond (jmreymond-free)]

Now, It works for me with 17.10 (HP Pavilion dv6)

[ahiung lim (quenyan)]

Same issue on Macbook Air 13" Mid 2013
Suspend will not work on "Lid trigger" and "manual power option", however it will somehow worked on "Automatic suspend", I said "somehow" because even tho the light is off, the laptop still hot.