What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
You can turn a compatible Galaxy phone or tablet into a practical coding station by running Termux in Samsung DeX. For shell-based development, Termux itself is enough: it provides an Android terminal and Linux environment, so you do not need to install a separate Linux distribution. Add a graphical Linux desktop only when you genuinely need Linux GUI applications; that route uses a PRoot userspace together with Termux:X11 and has more moving parts.
The reliable order is hardware first, Termux second, coding tools third, and graphics last. Check DeX and external-display support for your exact Galaxy model and software before buying an adapter, install Termux and its plugins from one compatible source, then validate a terminal workflow before attempting a desktop session.
As an Amazon Associate I earn from qualifying purchases.
What this workspace actually is
There are two layers in a DeX coding setup. Samsung DeX supplies the desktop-style display, window management, and input connection. Termux supplies a terminal application and Linux environment inside Android. DeX does not turn Android into a conventional Linux distribution, and Termux does not require a graphical desktop for command-line programming.
Do these 3 things before closing this tab:
1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsThat distinction determines the simplest setup. A terminal editor, Git client, interpreter, compiler, build tool, or remote-shell workflow can run directly in Termux while DeX provides a larger screen and keyboard-friendly layout. A graphical Linux application is a separate project: a community configuration places a Linux userspace under PRoot and sends its display through Termux:X11. That configuration is not a Samsung-supported DeX mode.
#1 Best Overall
- Premium aluminium 5-in-1 USB C Hub with 4K HDMI,5Gbps USB3.0,3.5mm Audio Jack,Type-C PD Charging/Data transfer,USB2.0.Maximize your USB-C device's capabilities
- 3.5mm Audio Jack,connect headphone and speaker.Support Microphone input.You can adjust the volume both on iPad Pro or in-line volume control on earphone/headset.Type C port not only deliver power at Max 60W,but also support USB-C headphone
- Mirror or extend your screen through HDMI output port and directly stream 4K@60Hz,1080P@60Hz,video to HDTV,monitors,or projectors for hassle-free presentations, conference calls,video streaming,home theater.Ideal for school,office,home,and game
- Extra 2 USB-A Port transfer speeds up to 5Gbps,transfer images,files,and videos in seconds.Allow you to connect phone,keyboard,mouse,thumb drive,camera,hard drive,etc.Please upgrade your iPad Pro to iPadOS 13 or above version to utilize any format of file transfer and more USB peripherals connection
- Wide Compatibility for Samsung Galaxy S25/S24/S23/S22/S21/S21 Ultra/S21+/S20/S20+/S20 Ultra/S10/S10+/S10e/S9/S9+/S8/S8+/Note20/Note10,Tab S9/S8/S7/S7+/S6,MacBook Pro 13''/14''/16'' M2/M1 , MacBook Air M2/M1,iPad mini 6/iPad Air 5/iPad Air 4/iPad 10/iPad Pro M2/M1
Check compatibility before installing anything
Verify the Galaxy device
DeX support and video output vary by Galaxy model, regional variant, Android release, and One UI software. Samsung’s general DeX documentation explains the connection model, but examples on older support pages should not be treated as a current universal compatibility list. Open Samsung’s current support information for your exact model and confirm that the intended DeX mode and external-display output are supported.
- Record the exact model number, not just the product family name.
- Check the installed Android and One UI versions.
- Confirm whether your model supports wired monitor output, wireless DeX, or both.
- Check any resolution, refresh-rate, or accessory limitations listed for that model.
Plan the display and input connection
For a wired desk, you normally need a compatible monitor or television, a supported USB-C video adapter or hub, and power for the phone or tablet. A USB-C to HDMI adapter is a sensible search term, but compatibility must be confirmed against the Galaxy model before purchase. Some hubs expose ports that a particular device cannot use, and an adapter that charges another phone is not automatically a video adapter.
Samsung describes using a keyboard and mouse connected by Bluetooth or USB. DeX can be controlled without both peripherals, but coding is substantially more practical with a physical keyboard and pointing device. If the hub has only one USB port, use Bluetooth input or a powered hub so the phone is not forced to power every peripheral directly.
Recommended Free Tools
Choose the right coding path
| Choice | Best for | Additional setup | Main trade-off |
|---|---|---|---|
| Termux terminal in DeX | Shell-based coding, command-line tools, editors, interpreters, compilers, Git, and remote sessions | Termux plus a compatible DeX display and input setup | Android storage rules and Android app behavior still apply; no graphical Linux desktop is implied |
| PRoot desktop through Termux:X11 | Readers who specifically need a graphical Linux desktop or GUI Linux applications | A PRoot Linux userspace, the Termux-side X11 component, and the Termux:X11 Android companion app | More components, more troubleshooting, and community-maintained guidance rather than an official Samsung configuration |
Start with the first row even if you eventually want the second. It isolates DeX, Termux, and your development tools so that a later display problem cannot be mistaken for a basic installation problem.
Connect and configure Samsung DeX
- Prepare the monitor. Select the HDMI, DisplayPort, or other input that your device and adapter support. Turn the monitor on before connecting the phone when possible.
- Attach the supported adapter or hub. Connect the USB-C end to the Galaxy device and the display cable to the monitor. If your hub has power input, connect the charger so long sessions do not drain the battery.
- Accept the DeX prompt. When Android detects a supported display, choose the DeX option rather than ordinary screen mirroring if both are offered. The exact wording depends on the software version.
- Pair or plug in input devices. In Android Bluetooth settings, pair the keyboard and mouse, or connect USB devices to the hub. Test typing in a text field before opening Termux.
- Set a usable layout. Adjust monitor input, DeX screen resolution, pointer speed, and keyboard layout. A coding workspace benefits from a resolution that leaves room for both the terminal and documentation without making text too small.
If the external display stays blank, disconnect the adapter and test the phone’s own display first. Then confirm model support, cable direction, hub power, monitor input selection, and the adapter’s stated video capability. Do not assume that a charging-only USB-C cable can carry a display signal.
Install Termux without creating package conflicts
Termux project documentation describes it as an Android terminal application and Linux environment and documents more than one supported distribution channel. Choose one supported source for the main Termux app and keep every Termux plugin on that same source. Android package signatures can prevent an app installed from one source from being updated or paired with a plugin from another.
- Remove conflicting copies if necessary. If Android reports a signature or update conflict, back up any files you need, uninstall the conflicting Termux apps, and reinstall the main app and plugins from one source. Uninstalling can remove app-private data, so do not do this before copying important projects.
- Install the main Termux app. Use the source listed in the Termux project documentation rather than an unverified mirror.
- Install only the plugins you need. The graphical route requires the Termux:X11 Android companion app as well as its Termux-side component. Do not install that pair merely to use a terminal.
- Launch Termux once. Let Android finish creating the home directory before installing packages.
Keep Android from putting Termux to sleep during long builds if your device exposes a per-app battery setting. The exact menu label differs by One UI version; look under Settings, Apps, Termux, Battery and select the least restrictive option that still fits your battery priorities.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Rank #2
- USB C to 4K HDMI adapter designed with 4K HDMI Output,USB 3.0,SD/Micro SD Cards Reader,USB Type C PD Charging.Plug and play,no driver/software is needed.
- Enjoy PC-like experience for Samsung Galaxy via DeX mode.Enable you turn any place into a workplace and enjoy vivid video in huge TV or monitor anywhere.Ideal for school,office,home,and game.Please charge the hub by original Samsung charger when using DeX mode.
- USB3.0 Port speeds up to 5Gbps,transfer images,files,and videos in seconds.Allow you to connect phone,keyboard,mouse,thumb drive,camera,hard drive,etc. Quickly access your image/video throught bulit-in SD/Micro SD card slot.USB-C PD charging port allow delivers power at Max 60W.
- Wide Compatibility for Samsung S20/S20Ultra/Note20/Note10/Note9/TabS7/S7+/S6/S5,Nintendo Switch,2020/2018 iPad Pro/iPad Air 4,MacBook Pro/Air,Microsoft Surface Book 2, Surface Go, ChromeBook Pixel,most USB-C interface devices.
- Warranty of USB C Hub,you will get 1 year+6 months warranty.We provide free replacement and return term,we also provide you professional customer service & technical support within 24-hours.
Build a command-line coding workspace first
The following sequence is a practical baseline. Package names and available versions can differ between Termux releases, so confirm a package with Termux’s own package manager if a command reports that it cannot be found.
- Update package metadata and installed packages.
pkg update && pkg upgradeRead the prompts rather than blindly accepting a configuration-file replacement. On a new installation, this step may take several minutes.
- Create a project location.
mkdir -p ~/projects
cd ~/projectsKeeping active code under the Termux home directory avoids unnecessary Android shared-storage permission issues.
- Install the tools your project needs.
pkg install gitAdd the interpreter, compiler, editor, or build system required by the project. For example, a Python project needs a Python package supplied by the current Termux repositories; a C or C++ project needs the corresponding compiler toolchain. Do not install a complete desktop distribution when a native Termux package meets the requirement.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy. - Set up Git identity if you use Git.
git config --global user.name "Your Name"
git config --global user.email "[email protected]"Use the identity associated with your repository. These settings affect commit metadata, not authentication.
- Clone or create a project.
git clone https://example.invalid/project.git
cd projectReplace the example address with the repository you are authorized to access. If you do not have a remote repository, create files directly under
~/projects. - Choose a terminal editor.
Install a text editor available in your package repositories, then launch it from the project directory. A terminal editor is often more reliable in DeX than an Android GUI editor because it remains inside the same shell, supports standard build commands, and does not depend on resizable Android windows.
Rank #3
Sale
Anker USB C to HDMI Adapter (4K@60Hz), USB Type C to HDMI Cable Adapter | 4K HDMI for MacBook Pro, MacBook Air, iPad Pro, Pixelbook, XPS, Galaxy, and More(Compatible with Thunderbolt 3 Ports)- The Anker Advantage: Join the 80 million+ powered by our leading technology.
- Vivid Video: The HDMI adapter lets you connect to any TV or display with an HDMI port to stream video in up to 4K resolution.
- Plug and Play: Instantly turn your laptop’s USB-C port into an HDMI port, with no installation necessary. This product does not support charging or Power Delivery (PD).
- Premium Construction: A lightweight aluminum casing allows for greater heat dissipation, while the reinforced braided-nylon cable is designed to withstand the twists and tugs of daily use.
- Compatibility: Supports USB-C DP Alt mode, USB4, and Thunderbolt connections.
- Run the project’s documented setup and tests.
Use the project’s own instructions for virtual environments, dependencies, build commands, and tests. Keep dependency caches and generated files inside the project or Termux home unless the project specifically requires shared Android storage.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Optional access to shared Android files
If you need photos, downloads, or files created by another Android app, use Termux’s documented storage-permission command and approve Android’s permission prompt. Shared storage is convenient for exchanging files, but it is a poorer default for source trees because Android permissions, path names, and file-indexing behavior can interfere with Unix-style tools. Keep the canonical working copy in Termux home and copy selected outputs to shared storage when needed.
Use DeX as a terminal workstation
Open Termux in a large DeX window, keep documentation or a browser beside it, and use keyboard shortcuts supported by the current DeX and Termux versions. A terminal multiplexer can keep a server, editor, and test process in separate panes, but install and configure one only after the basic shell workflow works. For remote development, connect to the host with the SSH client available for your Termux build and protect keys with an Android screen lock and appropriate file permissions.
Add a graphical Linux desktop only when required
A PRoot desktop is useful when a project depends on a Linux GUI application that cannot run as a normal Termux package. It is not required for shell coding, and it adds a second environment whose files, processes, and package manager are distinct from the Termux host.
Understand the three components
- Termux host: the Android terminal where you install and launch the supporting packages.
- PRoot userspace: a user-space Linux environment that emulates a separate filesystem layout without requiring root access.
- Termux:X11: an Android companion app plus a Termux-side component that carries graphical application output to the display.
The cited community setup uses all three. Follow that project’s current upstream installation instructions for the exact package names and launch commands; those details can change, and this configuration is community guidance rather than a Samsung-supported DeX feature.
Free tools Windows power users keep installed
One-click scans. No signup required.
Recommended installation order
- Finish and test the native Termux terminal workflow.
- Install the Termux:X11 Android companion app from the same trusted distribution approach used for compatible Termux components.
- Install the Termux-side X11 package or command specified by the current upstream instructions.
- Create the PRoot Linux userspace using the method documented by that project.
- Launch the X11 companion, start the PRoot environment, and apply the display environment settings required by the current instructions.
- Open one lightweight graphical application before attempting a full desktop session.
Do not mix package sources halfway through this process. A GUI that opens in a normal Android window is not proof that the X11 display path is configured correctly; validate that the application appears on the intended DeX monitor and that keyboard and pointer input reaches it.
What can go wrong in the GUI path
- Black or empty display: confirm that both the Android companion app and the Termux-side component are installed, then check the display environment settings from the upstream instructions.
- Application starts and exits: test a smaller application, inspect the terminal error, and verify that the PRoot userspace has the required runtime libraries.
- Pointer or keyboard does not work: test input in native DeX and Termux first; then check whether the GUI session has focus and whether the X11 app is receiving events.
- Very slow rendering: reduce desktop effects and run only the applications you need. A PRoot layer and graphical rendering consume more resources than a native terminal.
- Files appear missing: remember that the PRoot filesystem and Termux home are different views. Configure an explicit shared directory only as documented by the chosen setup.
Understand DeX window limitations
DeX builds on Android multi-window behavior, so an application can launch successfully yet behave unlike a desktop Linux program. Samsung’s DeX FAQ identifies requirements involving display density, mouse or trackpad interaction, and resizable activities for desktop-style resizable windows.
Rank #4
- Versatile 3-in-1 USB C Hub: Upgrade your laptop's connectivity with the Acer USB C Hub. It offers a HDMI 4K@30Hz output port, a PD charging port (Charging function only), and a USB-A 3.0 port. Effortlessly mirror your iPhone or iPad screen to a TV, projector & monitor. Ideal for enhancing your home theater experience, optimizing office productivity, facilitating travel, and more.
- Ultra HD 4K Video Output: Enjoy high-definition visuals with the 4K@30Hz video output, whether you're watching videos, editing photos, or conducting multimedia presentations. Compatible with most HDTVs, monitors, projectors, and other devices with HDMI ports, offering vivid, clear video and pictures. 📌Note: USB-C port must support "DisplayPort Alternate Mode". NOT support Portable Monitor. Not HDMI Female Port.
- 100W Fast Powerful Charging: Tailored for rapid charging, the Type-C/Thunderbolt 3 port on this USB-C dongle has a maximum power delivery of 100W and is compatible with PD fast charging protocols. (📌 Note: Charging speed varies depending on the device, cable, and charger used. Please ensure the charger and charging cable are 45W or more for better charging. The USB-C port only supports charging host device)
- High-Speed Transfer: Seamlessly move files to and from your laptop at speeds of up to 5 Gbps through USB-A data ports, a remarkable 10 times faster than USB 2.0 (480 Mbps). (📌 Note: The USB A port does not support charging.)
- Impressive Compatibility: Encased in high-quality aluminum housing for enhanced durability and heat dissipation, this usb c to hdmi adapter offers wide compatibility with various devices, including laptops, tablets, and smartphones. Designed for use with MacBook Pro/Air, iPad Pro/Air, HP, Acer, Dell XPS, laptops, Surface, tablets, this USB-C adapter functions seamlessly across multiple operating systems, including Windows, ChromeOS, Linux, and macOS X 10.5 or higher. 📌Note: Not compatible with iPhone, iPad, iPad Pro (Lightning Port), Portable Monitor, Galaxy A/ Tab A series, GoPro Series, Motorola Phone, and Fire Tablet.
In practical terms, a coding app may open at a fixed size, refuse arbitrary resizing, show a mobile layout, or handle right-click and pointer gestures differently from a desktop application. Termux’s terminal workflow generally avoids these problems because the shell is text-based. GUI applications should be evaluated individually rather than assumed to inherit full desktop behavior.
Daily operating checklist
- Connect the monitor and verify DeX before starting a long build.
- Use a charger or powered hub for sustained compilation.
- Keep source code in Termux home unless shared Android storage is required.
- Update packages deliberately and read configuration-file prompts.
- Back up repositories and important keys outside the device.
- Lock the device and protect SSH credentials with Android security controls.
- Close graphical sessions cleanly before disconnecting the display.
Troubleshooting by symptom
Termux will not update or a plugin will not install
The most common cause is a source or signature mismatch. Check where the main Termux app came from, then obtain every plugin from that same source. If an older copy remains installed, back up projects and remove the conflicting installation before reinstalling the matching set.
DeX does not appear
Recheck the exact Galaxy model and software support, then test a known-compatible display path. Inspect the monitor input, cable, adapter, hub power, and Android prompt. Wireless and wired DeX are separate capabilities; support for one does not prove support for the other.
The keyboard works in Android but not in a coding app
Click the terminal or editor window to give it focus, confirm the selected physical-keyboard layout, and test in a simple shell prompt. If only one application fails, its Android window implementation is the likely limitation rather than the DeX connection.
A project cannot read or write a file
Check the current directory with pwd, list files with ls, and verify that the path is inside the environment where the project was created. If the path is under shared Android storage, grant the requested permission and account for Android’s storage restrictions. A PRoot application may need an explicitly configured shared path.
A long build stops when the screen turns off
Review Android battery optimization for Termux, keep the device powered, and use a persistent terminal session where appropriate. Also check whether the build itself is running inside a GUI window that lost focus or was suspended by Android.
When each approach makes sense
Choose native Termux when
- Your work is primarily shells, scripts, Git, text editors, interpreters, compilers, or remote servers.
- You want the fewest components and the easiest recovery path.
- You need predictable behavior while traveling or working from a small display.
Choose PRoot with Termux:X11 when
- A specific Linux GUI application is essential and has no workable terminal or Android alternative.
- You accept community-maintained instructions and additional troubleshooting.
- You understand that the PRoot filesystem is separate from the native Termux environment.
For most coding, the native terminal is the durable foundation. Add the graphical layer only after you can update packages, create a project, edit a file, and run a test successfully in DeX.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
