Default [Q] Galaxy Tab 10.1 7500 3g & Wifi Shaking Display

Hi guys, I need help… after rooting my Samsung galaxy tab 10.1 7500 wifi & 3g its works alright but the display shakes when it comes back from standby to draw the security pattern. I have to restart the tab before having the display back, always make sure I keep the tap active and does not go to standby.

Your help will be appreciated