The system can’t resume from suspend, there’s only a black screen.
I can’t change to another text session neither reboot, just power off the system from the front button.
The problem began after I changed my old GPU (7950GT) to the new one (GTX 970), before I suspended without issue.
P.S: I don’t attach nvidia-bug-report.log because after resume, there’s no way to run the script.
I have the same problem with a simular setup, not found the fix yet but you can restart the xserver and login by holding down the “ALTGr” key + “Print Screen” key then hit “K” key. EDIT UPDATE
Fixed by running the graphical card setup again in control center, this gives you the option of downloading + installing a proprietry driver which fixes the suspend problem.