Screen goes dim within a few seconds of opening the lid
MacBook Pro running Sonoma 14.1.2 I open the lid, screen looks fine, then goes dim after a few seconds. If I close and open the lid a second time right away, it goes dim immediately. If I wait a couple of hours before opening it again, I get a few extra seconds. This came on suddenly two days ago. No software added, but maybe there was an update of something?
MacBook Pro 15″, macOS 10.13