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The “NO_PUBKEY” GPG error occurs when a user adds a software repository or PPA to Ubuntu without adding the GPG signing key. Since Ubuntu’s software back-end takes security seriously, the system will not allow the user to install anything from the repository without this key, and so this error appears. …

Desktop icons are all the same size. It really doesn’t matter what an icon is for; it could be a simple text file, it could be a shortcut, an app EXE, or the Recycle Bin. The icons will all be the same size. If you have a high resolution screen, …

Mac apps, like desktop apps for any other platform, can show notifications on the desktop. On iOS, apps have to ask for a user’s permission to show notifications but the same rules don’t apply on macOS. Apps that you install assume, by default, that they can show you notifications. Here’s …

Firefox add-ons can, and often, add an icon to the toolbar. In most cases, when an add-on adds an icon to the toolbar, it does it so when it has menu items that a user will need to access in order to use it. Add-ons that don’t need additional user-interaction …

Windows Defender runs mostly in the background. It will scan new files for threats, and it will also examine any file that you download via the browser, regardless if you’re using Edge or Chrome, or some other browser. It never really runs full system scans while you’re actively using your …

Microsoft’s encryption technology for Windows is known as Bitlocker. It’s great technology that, when used on a partition, can protect your privacy. However, if you’re using Linux alongside Windows, you may be disappointed to know that there isn’t any support for Bitlocker partitions out of the box on most modern …

If you’ve been waiting to run your favorite Mac command-line apps on Linux, you’ll be happy to know that progress is being made. Thanks to the Darling project, it’s now possible to run macOS command-line apps on Linux. Here’s how to get it working. Why no GUI apps? Darling as …

Passwords are sensitive information and they should be kept safe. This holds true regardless of what a password is for. No password should simply be visible on a device, and that holds true for a WiFi network’s password. If you’re connected a WiFi network, you already have the password for …

If you know how to write simple PowerShell or Batch scripts, you can automate quite a few things on Windows 10. In fact, even if you have to spend a little time writing the perfect script for something, the time saved once it’s good to go will be worth the …

Chrome has been making small changes to its UI for some time now. It’s switch to the Material design look is practically complete and it’s now making smaller changes to other areas of the browser. As with most things, these changes are opt-in for now. There’s a new Chrome extensions …

Adapta is a well-known GTK theme for Gnome-like Linux desktop environments. It borrows a lot of Google’s “material design” look and is one of the most downloaded themes because of it. The Adapta theme isn’t just for Gnome users, though. Thanks to Adapta-KDE, it is possible to enjoy the beauty …

If your laptop is running Windows 10, you very likely see a battery icon in the system tray. This icon indicates the state of your battery; charging, plugged in and charging, plugged in and charged, and discharging. These states are reflected by the icon. If you want to see just …

If you leave your system unattended, your screen will eventually go to sleep. If you don’t return to it, the system will lock itself once the set amount of time has expired. If you want to turn the display off at will, you can set up the power button to …

Need to send a link from your Linux PC to your mobile device? Try generating a QR code on the Linux desktop! It’s quick, versatile and is compatible with virtually every mobile operating system! The best way to generate QR codes on Linux is with the command-line application Qrencode. Why? It …

The Elementary OS desktop environment is designed to be good looking and functional. For the most part, it works. However, there are certain features that the developer turns off that many users may not be comfortable with, like desktop icons. So, in this guide, we’ll show you how to re-enable …

If you use Linux Mint and notice that software updates take too long to download, you may live too far from the official update servers. To fix this, you’ll need to swap to a local update mirror in Linux Mint. This will allow you to update the OS faster. Swap …

Feral Interactive has created an innovative program for Linux gamers known as GameMode. It’s an impressive tool that can improve performance while playing video games by optimizing several aspects of the Linux operating system, including the CPU governor, I/O priorities, GPU performance, and much more. Using GameMode on Linux requires …

On Linux, if your CPU is running hot, you won’t be able to open up an official AMD or Intel utility to check the temperature. Instead, to check CPU temperature on Linux, you must rely on third-party programs. In this guide, we’ll go over some ways to check the CPU …

Public betas have become quite a popular concept. When a product has a large user base, and that user base has an active interest in helping to improve the product, a public beta can be exceptionally helpful. For one, it allows the beta software to run on all types of …

Unsplash is a great place to go to for wallpapers. The site used to let you sort the photos by date allowing you to easily browse through all the new ones. Now, you get a selection of new photos and most new ones will not be discovered. This makes it …