HDMI Desktop Dims

Just brought up a new Beaglebone Black out of the box. Have it attached to an HDMI TV. After the desktop comes up it is very dim. As soon as I open any window on the desktop, the display is the normal brightness it should be. The display will revert back to dim mode unless I have some window opened on the desktop. Not sure if this is a hardware or software issue.

Any help would be appreciated!