Anecdotally, I’m running Kubuntu on a Dell 7280 with a 4 cell battery as my personal computer, which gets an hour or two of websurfing and home network experimentation per day, and I’m having to charge up once or twice a week. I dunno how that stacks up to other devices or distros, but I really barely think about my battery.

I actually really don’t like this feature, but I just went and checked on my S21, as well as my work S20, and both of them have a Flash notification option, which flashes the camera LED when a notification goes off. Is that what you’re talking about?