Q: display is flickering

Hello gchad414,

Welcome to the Apple Support Communities!

I understand that you are noticing a flicker on your Mac’s display after updating to Mac OS X Mavericks. To begin the troubleshooting process, I would suggest reading over and working through the suggested steps in the No video or signal, image distortion, “snow,” or flickering section in the attached article below. 

Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support

Have a great day