Working Title G1000 NXi Discussion Thread

Hi,
Maybe this has been discussed before, but with over 2000 entries in this thread alone, I cannot find my issue.
The problem I have after installing the G1000NXi is that the MFD in the C-172 ( and other airplanes like the DA-40) remains dim and the brightness knob only adjusts the PFD. Without the G1000 NXi all is well.
With G1000 NXi:
http://puu.sh/II0tb/4b3a3cb638.jpg

With default avionics:
http://puu.sh/II0qs/9934724018.jpg

Any ideas?

Thanks!