Oldish thread but here's my findings on the "flicker" issue after a couple of weeks:
1) For me it only ever happened after the screen had been turned off by the OS for power savings
2) Sometimes the screen would turn on and flicker occasionally afterwards, other times it would not turn back on at all.
However, preventing the screen being sent to sleep mode and just turning it off with the power button has completely removed all these issues for me. It's not ideal but it's something I can live with.
As best I can tell: If the monitor never goes into sleep mode, there is never an issue with it. However, once the issue appears it's there until the computer is rebooted. By never letting the monitor get put into power saving mode, the issue never arises.