I have a problem with the Standby function: My Computer does not enter the Standby mode with Ubuntu 14.04LTS. If I remeber me right it, works with Ubuntu 13.10 but this Version was not long installed on this PC.
Now when i press Standby in the menu or on my Keyboard the Display turns black for a few seconds, then some messages appear for a very short moment on the screen. After that, the the log-in screen appear. Two times I was able to enter Standby but the other times it fails.

Tecnical Data about my PC:

• Ubuntu 14.04 with all Updates
• main storage: 3,8GiB
• processor: Intel® Core™ i3-2330M CPU @ 2.20GHz × 4
• graphic: Intel® Sandybridge Mobile
  graphic board: NVIDA GEFORCE GT 555M CUDA 1GB

Here is the message output:

Usally I got only a half of the screen filled with messages like that. When I filmed it it was much more.

I dont know, maybe this is a Bug.