I was using Nvidia graphics card and the Nouveau display driver, this seemed to cause the problem.
I moved to a proprietary Nvidia driver, rebooted and suspend now works fine. So I would suggest checking what driver you are using and changing to the proprietary driver available for your system. Check in: SYSTEM SETTINGS / SOFTWARE & UPDATES / ADDITIONAL DRIVERS -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990129 Title: Suspend/Resume hangs and fails - Ubuntu 12.04LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/990129/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
