Graphics and desktop

JelinaOS offers several system variants for different application and interaction requirements. The default variant depends on the device type and image.

System variants

Variant	Description	Use cases
Command line	No graphical environment; minimal resource usage	Gateways, acquisition, headless deployments
X11 desktop	Classic desktop environment with the broadest application compatibility	HMI, desktop applications, traditional graphical software
Wayland desktop	New-generation graphics protocol, lightweight and efficient	Touch interaction, modern graphical applications

Graphics capabilities

GPU acceleration: Platforms such as Rockchip provide GPU driver support for smooth rendering.
Display output: Supports mainstream interfaces such as HDMI and LVDS, depending on the device.
Touch support: Touchscreen devices work out of the box, including multitouch support.

Desktop management

Log in to the desktop

Systems with a desktop boot directly into the graphical interface. Log in using your device account.

Change the system variant

Different variants require different images. Determine interaction requirements during product selection and choose the corresponding system image:

Business logic only, with no interaction required → command-line variant.
Local operator interface required → desktop variant.

Interface capabilities

Devices include a lightweight interface system, Jelina-UI, for status notifications, deployment progress, and confirmation dialogs:

Status notifications: Visual presentation of system status and alerts.
Deployment progress: Progress displays during updates and installation.
Interactive confirmation: Confirm critical operations, such as updates, through the interface.
First-boot welcome: Guidance and prompts at initial startup.

The interface system comprises a rendering process and a control CLI, jelina-ui-ctl. It supports multilingual presentation and scripted control for embedded and desktop environments.

Interface control tools

Desktop devices provide interface management commands for display control, session management, and status queries:

jelina-ui-ctl --help          # Show help
jelina-ui-ctl list            # List UI instances
jelina-ui-ctl sessions        # View sessions
jelina-ui-ctl status --instance <instance-name>   # View instance status

Control display output as needed; consult command help for precise usage.

Common questions

The desktop does not display. Check display connections and confirm that the system variant includes a desktop. If necessary, reinitialize the display using interface control commands.

Do you need remote desktop access? After connecting to JelinaCloud, you can view the device desktop remotely through a secure channel, provided the system supports and enables this capability.

Supported devices — Graphics capability differences by platform
Networking and security — Security configuration for remote access