I love Ubuntu and haven't even had to ask a question here but it seems the time has come that I must. The newest version, 13.04, has a lot of problems.. but this problem is one that isn't specific 13.04 because I have tried 12.04 and 12.10 with the same results!
I have been using this Lenovo T520 with Intel Integrated Graphics 3000 and loving it.
A recently purchased Dell 27" Ultra-sharp U2713HM monitor with promised 2560x1440 resolution poses a problem. Randomly during normal use (and almost instantly during heavy use) the monitor blinks off/on and sometimes shuts off completely forcing a manual restart of the monitor!
At lower resolution (1920x1200) over DisplayPort there are no problems at all.
In Windows 7, everything appears to be working perfectly as well.
I've installed the new May 20th 2013 Intel Integrated Graphics driver and the problem still persists.
Let me know if any information is needed but I would sure appreciate anyone that can take a minute to point me in the right direction.
Thank you!