I'm preparing a bunch of tablets using a minimal android OS (https://slimroms.org/). And was wondering if there's a way to always have the display on (i.e. disable Sleep and Auto Screen lock) without needing to use third party apps. I've got full root access via SSH and ADB etc - hoping there's some setting in /proc or as a kernel boot argument that I can make.
These are intended to be "We would like your feedback" tablets which are out on public display - so the display should never dim or lock etc. They're always going to be plugged in so power saving etc isn't going to be an issue.