[Q] Flickering/rolling screen after screen on/unlock

Dear colleagues,

I'm facing a very frequent problem with flickering/rolling screen after unlocking on my P7510 Table (Europe version).

I just upgraded for the first time from original Samsung ROM directly to "[KK4.4]Omni ROM". I'm running the latest CWM 6..... There is no flickering/rolling on CWM screen. There is no problem with the Omni rom, everything works fine (Wifi, ...).

However after switching the screen Off/On flickering/rolling appears what makes table unusable.

I spent hours reading post regarding this issue but found nothing useless.

Please help.