Hello,
I have the same problem as here: http://en.community.dell.com/support-forums/peripherals/f/3529/t/19623182
"The screen goes black only for a 1-2 seconds and then back to normal. This happens randomly."
Also my monitor is flickering. It is my second U2515H and the previous one was turning itself off for 1-3 seconds too. It happens a few times an hour, so it's extremely annoying
The monitor is A01 (CN-09X2VY-64180-517-0YUL) and the previous one was A00. USB hub is disconnected. PCI Express- Link State Power Management – off. I'm using Windows 7, Radeon HD 5770 grafic card, monitor is connected by DP (mDP previously) cable. All my drivers are up to date.
Help please...
