5
votes
1answer
457 views

Does using a brightness reducing app save battery?

I installed the app Brightness Slider on my MacBook because the lowest brightness setting in the System Prefs isn't low enough at times. When I choose a brightness setting below what the System Prefs ...
1
vote
1answer
300 views

Energy Saver preferences keep breaking

This is a new question related to a question I asked previously. MacBook is sleeping despite being set to "never" sleep Basically, the MacBook would sleep after 3 hours despite the ...
7
votes
2answers
3k views

Use external display only with MacBook?

I have a Mid 2010 MacBook. Is it possible to make the external display into the only one, so that I can close the lid and keep working on my MacBook with an external keyboard/mouse and monitor?