How to improve battery life on ubuntu and a mac

I just want to point out two tools that were helpful in improving the battery life on my Ubuntu.

First, a few words about batteries. On my 2012 Macbook pro, I just replaced the battery and am quite happy with the result. Even though the battery is glued to the chassis and the repair task is rated “hard,” it’s not that hard.

Use this method to replace the battery:

Note: tooth floss didn’t work for me… it would break. I used some translucent thread found at home depot.

Note: soaking the thread in 99% alcohol was critical! Without the alcohol, the thread would not cut through the glue. With alcohol, the thread cut through the glue easily.

And so.. replacing a glued-on battery on a macbook pro is not actually difficult. About 1 hour of work. Make sure that you have the specific proprietary Apple screwdrivers, the pentalobe.

As for Ubuntu power savings… ubuntu doesn’t have the reputation for great power management. However, these two tools helped me out:

sudo tlp stat

sudo powertop

The powertop ^ has “tunables” tab (press TAB repeatedly, press up/down to select the tunable that says “Bad” and press ENTER), enabling which allows you to get some better life out of your battery.

I might also note that the Dell Latitude e7440 has a removable battery, and I carry an extra one around, allowing me to work twice longer without hugging the wall. Just saying, no complaints about that hardware.

Tech Hubs in United States

Where do you look for a tech job, if you are physically in the United States? Here’s a graphic that helps answer that question. Now, this being sourced from LinkedIn, the information may not be 100% accurate, and the interpretation of the info may be tricky. But at least we see which areas have a heavy sector, and prospective job seekers can look into them. Yes, Washington DC has a massive tech sector.


Chef Kung Fu


Chef Style DevOps Kung fu

This repository defines Chef Style DevOps Kung fu.

It includes a presentation you can give, or ask people to watch, which explains what DevOps is, and defines a style of practice that comes from the lived experience of many DevOps professionals. It is a collaborative space, where all practitioners of the style can come together to create a reference for how to build up their own DevOps Kung fu, and teach others how to improve theirs.

You should start by watching the presentation, then come back here. If you agree with the fundamental principles, wish to practice our forms, and apply the style to your professional life, you can join our school by sending a pull request to this README file, and adding your name to the list of practitioners.

The slides are available online.

If you like most of what you see, but not all, or wish to emphasize different things about your style – but you agree on the same fundamental principles – you should fork this repository, remove the names of practitioners from this file, and found your own school of DevOps Kung fu. All we ask is that you please give attribution of your style as a derivative of Chef Style DevOps Kung fu.

What is DevOps?

A cultural and professional movement, focused on how we build and operate high velocity organizations, born from the experiences of its practitioners.