I have a fresh install of OS X Yosemite. There is an issue where the screen goes black or seems to go to sleep while I am using it. When this happens, it's iffy on getting it come back on. The esc key works sometimes. Closing the lid and logging in works too. I have three console copy and paste of the times this event is happening in the hopes that someone can help me troubleshoot. I thought maybe it was my DNS servers so I added Google DNS, but not sure this is it.
Here is my two logs from my console which should be very helpful in diganosing.