In NXi G1000. ON PFD hit Menu, found brightness controls. Set MFD to manual but it was set to 100% already. So I cut it to 75%, hit enter to see MFD would get darker, but nothing happened, it stayed the same. In the Stock version the MFD comes up like it’s off. Unloaded WT G1000 and tried to get MFD to become visible, bit it is set to 100% as well. In the stock G1000 the MFD is off. In C172.