[SOLVED] MacBook Pro keyboard backlight not working? Check this post

Keyboard backlight not working on your MacBook Pro? And your Mac has a touch bar? 

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MacBook Pro 2020 which comes with a touch bar has moved its Keyboard backlight controls to the touch bar. You will not see any control on the screen under the Keyboard settings. But the setting in the touch bar is also not easy to see and it bit tricky. You most probably, think that there is some issue with Keyboard. Even the support people suggest resetting some of the settings. That is what happened with my case. Luckily I found a way to change the settings. 

By default, the Keyboard backlight settings are not visible on the touch bar. You have to expand the tra-like stuff on the touch bar and then you will find icons, which look similar to screen brightness control icons. 

On the right side of your touch bar, you will these 4 controls

1. Screen Brightness control 

2. Volume control 

3. Mute control 

4. Siri button. 

Left these controls there is an arrow button which looks like '<', by clicking on this, you will see more controls. 

Once you click on the left arrow mark as shown in the above picture, it will open up more controls. 

At the center of the touch bar, you will see controls that look similar to Screen Brightness controls. You can use these to adjust the backlight of the Keyboard. 

How to create self signed ssl certificate, easy steps

 These are the ready commands to create self-signed SSL certificate. These certificates can be used for testing purposes. For a production-grade application, you need to contact a CA authority to get the actual SSL certificate. But for your internal testing, you can always use a self-signed SSL certificate. 

Here are the steps to create a Self Signed SSL certificate using OpenSSL

# generate self sigend ssl certificate

rm -rf *.pem

echo "Generating CA certificates"

# Step 1: generate CAs certificate

openssl req -x509 -newkey rsa:4096 -days 365 -keyout ca-key.pem -out ca-cert.pem -subj "/C=IN/ST=kartnataka/L=bangalore/O=test/OU=test/CN=*.test.com/emailAddress=test@test"

#inspect the CAs certificate

#openssl x509 -in ca-cert.pem -noout -text

# Step 2 generate server sign request certificate which will be used for self signing. Change the subject to as per web server

echo "Generating Server certificate sign request"

openssl req  -newkey rsa:4096 -keyout server-key.pem -out server-req.pem -subj "/C=IN/ST=kartnataka/L=bangalore/O=sever/OU=server/CN=*.server.com/emailAddress=server@test"

#openssl x509 -in server-req.pem -noout -text

# Step 3 Sign certificate

echo "Signing the server certificate with CA"

openssl x509 -req -in server-req.pem -CA ca-cert.pem -CAkey ca-key.pem -CAcreateserial -out server-signed-cert.pem

# Inspect the signed certificate

#openssl x509 -in server-signed-cert.pem -noout -text

How to Fix ImportError: No module named 'flask' with virtualenv

Flask is one of the most used frameworks in Python. If you are new to the flask and if you are getting this error - ImportError: No module named 'flask' on virtualenv, read further.

You are sure that the Flask module is already installed. But still, you are getting No module error. This is because you need to install a flask framework inside the virtualenv.

Follow these instructions

Step 1

Create a directory where you will be installing the virtualenv.

 

krishna@osboxes:~$ mkdir testenv

 

Step 2

Get inside the folder and install virtualenv

krishna@osboxes:~$ cd testenv/

krishna@osboxes:~/testenv$ pip install virtualenv

or

$ sudo apt-get install virtualenv

 

Successfully installed appdirs contextlib2 distlib filelock importlib-metadata importlib-resources pathlib2 scandir singledispatch six typing unknown unknown virtualenv

Step 3

Activate the virtualenv

This virtual environment requires activation and dedicated installation inside the virtual environment. It has to be installed after creating a virtual environment. The libraries will reside inside the folder created for the virtual environment.

 

krishna@osboxes:/tmp/tempenv$ source tempenv/bin/activate

(tempenv) krishna@osboxes:/tmp/tempenv$

 

Please note that you are inside the virtual environment.

Step 4

Install Flask inside the virtual environment

(tempenv) krishna@osboxes:/tmp/tempenv$ pip install Flask

Successfully installed Flask-1.1.2 Jinja2-2.11.2 MarkupSafe-1.1.1 Werkzeug-1.0.1 click-7.1.2 itsdangerous-1.1.0

Make sure that there is Flask package available inside the virtual env folder

 

(tempenv) krishna@osboxes:/tmp/tempenv$ ls -ltr tempenv/lib/python3.5/site-packages/ | grep -i flask

drwxrwxr-x 4 krishna krishna 4096 Aug 22 11:05 flask

drwxrwxr-x 2 krishna krishna 4096 Aug 22 11:05 Flask-1.1.2.dist-info

 

Step 6

Create a generic test.py basic python script to test the Flask

 

from flask import Flask

app = Flask(__name__)

@app.route('/')

def hello_world():

    return 'Hello World!'

if __name__ == '__main__':

    app.run()

 

Execute the python script

(tempenv) krishna@osboxes:/tmp/tempenv$ python test.py

 * Serving Flask app "test" (lazy loading)

 * Environment: production

   WARNING: This is a development server. Do not use it in a production deployment.

   Use a production WSGI server instead.

 * Debug mode: off

 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)