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  • The Culprit: Polkit
  • How to Fix "Authentication is required to create a color profile/managed device"
  • 41 replies
July 4th, 2022

How to fix “Authentication is required to create a color profile/managed device” on Ubuntu 22.04 / 20.04

How to get rid of these annoying popup errors on Ubuntu 22.04 / 20.04 RDP: "Authentication is required to create a color profile / color managed device".
April 21st, 2022

Windows 10 and Linux Samba Public Share Problem: “Windows cannot access \\hostname”

Due to Windows 10 Updates, you may no longer be able to access your public Linux Samba shares as a guest user. You can fix this by using regedit re-enable access.
October 25th, 2022

How to Run Multiple PHP Versions with Apache on Ubuntu 22.04 / 20.04 / 18.04

How to run multiple versions of PHP (PHP 5, PHP 7 and PHP 8) at the same time on Apache using Virtual Hosts and .htaccess. Tested on Ubuntu 22.04, 20.04 and 18.04.
May 4th, 2020

How to Install VNC on Ubuntu 20.04, 18.04 & 16.04 (Windows, Linux and Mac)

Guide on how to install and configure VNC to remotely control Ubuntu 20.04, 18.04 & 16.04 from Windows, Mac or Linux.
February 11th, 2023

How to Reset the MySQL Root Password on Ubuntu

How-to guide on resetting your root password for MySQL 8, MySQL 5.7 and MySQL 5.6 on Ubuntu via the Linux command line.
December 5th, 2018

Disable Sudo Password Prompt or Extend Timeout in Linux

How to disable the annoying sudo password prompt in Linux.
December 3rd, 2022

How To Create or Resize Swap Space on Ubuntu 22.04 / 20.04 / 18.04

Some critical services such as MySQL can crash if your server runs out of physical memory. In this guide we will configure swap space on Ubuntu 22.04 / 20.04 / 18.04.
February 18th, 2021

Let’s Encrypt Error: “Client with the currently selected authenticator does not support any combination of challenges that will satisfy the CA.”

June 11th, 2020

Installing phpMyAdmin for Nginx on Ubuntu 18.04 / 19.10

How-to guide on setting up phpMyAdmin for Nginx on Ubuntu 18.04 / 19.10 and implementing best security practises. DigitalOcean Droplet support.
February 7th, 2021

Installing an FTP server (vsftpd) on Ubuntu 18.04 / 18.10 / 19.04 / 19.10

How-to guide on setting up a secure FTP server for Ubuntu 18.04 / 18.10 / 19.04 / 19.10 using vsftpd. Allow uploads to /var/www/html and the home folder. Tested on a DigitalOcean Droplet.

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