Ultra wide monitor and dimming

jardenblack26

Prominent
Apr 8, 2018
4
0
510
I have an ultra wide monitor and whenever I turn on my computer I get to the screen to input my password or pin and before I get to type anything the screen dims a small amount. It goes from what feels like 100% brightness to maybe 80%. Is this something that would be in the monitors settings or in the OS settings?

Monitor is LG 29UM68-P and the OS is Windows 10 Educational