How to Run KDE Plasma Bigscreen on Your TV?

KDE Plasma 6.7 brings more than changes for the traditional desktop, Plasma Mobile and touch-oriented devices. This release also includes Plasma Bigscreen — KDE’s interface designed for large screens, TVs, mini-PCs, HTPC setups and devices used from the couch.

In practice, Plasma Bigscreen can be seen as an open source alternative to interfaces known from Smart TVs, Android TV, Google TV or webOS. However, it is important to understand one thing from the start: Plasma Bigscreen is not an app that you install directly on a television. It runs on a computer or another supported device connected to a TV, usually through HDMI.

It is also worth being realistic about its current state. Plasma Bigscreen is still under development. KDE notes that it is not yet widely available, although with Plasma 6.7 it is entering the regular Plasma release cycle, which should make it easier for Linux distributions to package it in their repositories. For now, it is better to treat Bigscreen as something to test and experiment with, not as a finished Android TV replacement for everyone.

What is Plasma Bigscreen?

Plasma Bigscreen is a version of the KDE Plasma interface designed for large screens. Instead of a classic desktop with panels, window controls and mouse-oriented workflows, Bigscreen provides a simpler and more readable layout intended to be used from a distance.

It makes sense on:

• TVs,
• HTPC computers,
• mini-PCs connected to a TV,
• laptops used as media-center devices,
• projectors,
• selected SBC devices,
• test devices running postmarketOS.

The goal is not to replace regular KDE Plasma on a laptop or desktop PC. Plasma Bigscreen is meant to provide a more convenient shell for large-screen use.

Can you install Plasma Bigscreen directly on a TV?

In most cases, no.

A typical Smart TV runs a closed operating system from the manufacturer, such as Android TV, Google TV, Tizen, webOS or another proprietary platform. Plasma Bigscreen is not an app for those systems and cannot be installed like an app from Google Play.

The usual setup looks different:

1. You use a mini-PC, laptop or HTPC.
2. You run Linux with Plasma Bigscreen on that device.
3. You connect the device to your TV via HDMI.
4. You use the TV as a large display.

In other words, Plasma Bigscreen runs on the computer connected to the TV, not on the TV itself.

What do you need?

For the simplest test, you need:

• an x86-64 computer, such as a mini-PC, Intel NUC, laptop or HTPC,
• a TV with HDMI input,
• an HDMI cable,
• a USB flash drive,
• a keyboard, USB/Bluetooth remote or controller,
• the KDE neon image with Plasma Bigscreen, or another supported installation method.

The safest test setup is a small x86-64 computer connected to a TV. Raspberry Pi and other ARM devices may be more interesting experimentally, but they usually require more work and depend heavily on support in a specific distribution.

Method 1: KDE neon with Plasma Bigscreen

The simplest official route is the KDE neon-based image. KDE provides a test image of Plasma Bigscreen for x86-64 computers.

This is the best option if you want to quickly see how Bigscreen works on a TV.

Step 1: Download the KDE neon image with Plasma Bigscreen

Go to the Plasma Bigscreen website and download the KDE neon-based image prepared for testing. The image is intended for x86-64 computers, meaning typical laptops, mini-PCs and desktop PCs.

It is not an image for a regular Smart TV.

Step 2: Write the image to a USB flash drive

You can use one of the common imaging tools:

• KDE ISO Image Writer,
• Balena Etcher,
• Raspberry Pi Imager,
• Fedora Media Writer,
• dd in the terminal.

Example using dd:

sudo dd if=plasma-bigscreen-image.iso of=/dev/sdX bs=4M status=progress oflag=sync

Replace /dev/sdX with the correct device name of your USB drive. Choosing the wrong disk may erase data from another drive.

To check available drives first, use:

lsblk

Step 3: Boot the computer from USB

Insert the USB drive into your mini-PC, laptop or HTPC. Then boot the device from USB.

You may need to open the boot menu using a key such as:

• F12,
• F11,
• F10,
• Esc,
• Del.

The exact key depends on the manufacturer.

Step 4: Connect the computer to your TV

Connect the computer to the TV using an HDMI cable. If no image appears, check:

• whether the TV is set to the correct HDMI input,
• whether the HDMI cable works,
• whether the system detects the external screen,
• whether the laptop is sending the image only to its built-in display,
• whether the selected resolution is supported by the TV.

On laptops, you may need to use a keyboard shortcut to switch displays, usually Fn plus one of the function keys.

Step 5: Test the Bigscreen interface

After booting, you should see the Plasma Bigscreen interface. For the first test, it is best to have a keyboard and mouse nearby, or a small wireless keyboard with a touchpad.

Eventually, Bigscreen makes the most sense when it can be used comfortably from the couch. However, during setup and troubleshooting, a regular keyboard is much more practical.

Method 2: postmarketOS

The second official method is postmarketOS. This is a Linux distribution based on Alpine Linux, developed mainly for smartphones, tablets, SBCs and other mobile or unusual devices.

Plasma Bigscreen is available in postmarketOS through the nightly repository, which tracks Plasma development. This means it is not the most stable path for beginners.

This method makes sense if:

• you already know postmarketOS,
• you have a supported device,
• you want to test Bigscreen on hardware other than a standard x86-64 computer,
• you do not mind using a nightly repository.

The general process is:

1. Check whether your device is supported by postmarketOS.
2. Install postmarketOS using the standard method.
3. Configure the nightly repository.
4. Install or select Plasma Bigscreen as the environment.
5. Run the device connected to your TV.

This is not the recommended path for someone who simply wants to try Bigscreen on a TV. For that, the KDE neon image on a mini-PC or laptop is a much easier option.

Method 3: Build it with kde-builder

The third option is to build Plasma Bigscreen yourself using kde-builder.

This route is for developers and advanced users. KDE points to it as a way to build and develop Plasma Bigscreen on distributions with fairly recent dependencies, such as Arch Linux or Fedora.

This method may make sense if:

• you want to develop Plasma Bigscreen,
• you want to test the latest changes from KDE repositories,
• you know how to diagnose dependency problems,
• you do not mind manually building KDE components.

For regular users, this path is too time-consuming and too prone to issues. For testing Bigscreen on a TV, KDE neon is the better choice.

How do you control Plasma Bigscreen?

You can use several types of input devices:

• wireless keyboard,
• keyboard with touchpad,
• mouse,
• USB remote that works like a keyboard,
• game controller,
• potentially HDMI-CEC, if your hardware and system configuration support it.

The most practical setup for testing is a small Bluetooth or USB keyboard with a built-in touchpad. A remote may be more convenient once everything is configured, but during setup it can be too limited.

Can Plasma Bigscreen replace Android TV?

Not yet.

Plasma Bigscreen is an interesting project, but its current state should be assessed realistically. Android TV, Google TV, webOS and Tizen have ready-made VOD apps, remote integration, DRM certification, popular streaming services and manufacturer support.

Plasma Bigscreen has different advantages:

• it is open source,
• it runs on Linux,
• it fits into the KDE ecosystem,
• it can run on a regular computer connected to a TV,
• it gives users more control over the system,
• it is not tied to a closed TV platform from a manufacturer.

However, the limitations are significant:

• package availability depends on the distribution,
• streaming services may require a browser,
• DRM and playback quality can be problematic,
• remote-control support may not always be perfect,
• the project is still under development,
• configuration requires more knowledge than using a ready-made Android TV box.

For this reason, Plasma Bigscreen is best seen as a project for Linux enthusiasts, KDE users and people who want to experiment with an open system on a large screen.

Best hardware for testing

The most practical choice is:

• mini-PC with an Intel or AMD processor,
• 8 GB RAM or more,
• SSD storage,
• HDMI output,
• Wi-Fi or Ethernet,
• UEFI support,
• graphics hardware well supported by Linux.

An older laptop with a broken screen can also be a good candidate if it still works over HDMI. You can connect it to a TV and use it as a basic media-center computer.

Raspberry Pi and other ARM boards are interesting, but they may require more manual configuration. For a first test, x86-64 hardware is the better option.

Common problems

No image on the TV

Check the selected HDMI input on the TV, the cable and the display settings. If you are using a laptop, the image may be shown only on the internal display.

Wrong resolution or scaling

4K TVs may require manual scaling adjustment. For a TV interface, text must be readable from several meters away.

No sound over HDMI

Open the sound settings and select the HDMI output. Sometimes the system defaults to laptop speakers or an analog output.

Remote control does not work

Many USB remotes behave like simple keyboards, but not all of them will be recognized correctly. For the first setup, a standard wireless keyboard is usually the safest option.

VOD apps do not work like on a Smart TV

This is expected. Some streaming services may only work through a browser, and playback quality may depend on DRM, codecs and Widevine support.

Is it worth trying?

Yes, if you like KDE, Linux and experimenting with open source software. Plasma Bigscreen is one of the more interesting projects showing that KDE is not limited to the traditional desktop. Alongside Plasma Desktop and Plasma Mobile, there is also a variant designed for large screens.

However, it is not yet a solution for users who expect the simplicity of a ready-made Android TV device. For now, Bigscreen is best suited as a test project, an experiment and a potential base for a custom Linux-powered media-center setup.

The simplest recommendation is this: if you want to try Plasma Bigscreen on your TV, use an x86-64 mini-PC or laptop, download the KDE neon image with Bigscreen, write it to a USB drive and boot the computer while connected to your TV via HDMI. This is the shortest and safest path to the first test.