After my Latitude 5175 received a few Dell updates this week - including bios, intel drivers and others - the system no longer goes to sleep in the set time. It does not turn off the display in the set amount of time either.
In fact, it seems to stay awake even after closing the lid and the system gets hot in this state.
I can manually put the system to sleep with the power menu.
Not sure how to roll back the drivers or bios or determine what may be causing the issue. I'm guessing I need to start with the Intel display drivers.