10.9.1 external monitor on hdmi sleep issue

Hi,

I have been lately having issues with my HD LG LED monitor that I have connected to my macbook thru HDMI.

The monitor goes to sleep and does not wake up at all. The screen stays blank - even after rebooting the laptop or waking it up.

My open windows in the monitor stay in that workspace and can not be accessed on the laptop screen.

I have seen flickering issues on my monitor in the past but thought they were due to static or some emi.

The monitor was working great with the Mavericks update as well so I am not sure what changed in between

The monitor works fine with my Windows notebook

Any pointers would be great!

Thanks,