Suspend does not work

[dehein]

After clicking suspend on my Laptop it shuts down, to suspend but after a while something flashes on screen for a microsecond. After this i see again my login screen, with a small hook next to my account name to show that i was logged in.

But no suspending at all happens.
I also tried to unplug my mouse to not let it wake up through mouse movements.
It seems that it just fails to suspend.

And it closes also my open apps.

ProblemType: Bug
DistroRelease: elementary OS 0.3
Package: elementary-desktop 1.350+394~ubuntu0.3.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
Uname: Linux 3.13.0-35-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Fri Aug 22 20:16:03 2014
InstallationDate: Installed on 2014-08-11 (11 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20140810)
ProcEnviron:
 LANGUAGE=de_DE
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)

[Belenos (belenos)]

I'm using Freya and having the same problem.