Long-Term Supported Versions

    UKUI Desktop Environment


    The desktop environment is the basis for GUI-based operations. UKUI provides multiple functions including taskbar and start menu. The home screen is shown in figure below.

    Fig. 1 Home screen


    Desktop Icons

    The Computer, Recycle Bin and Home folder icons are displayed on the desktop by default. Double click an icon to open the page. The functions are shown in table below.

    Computer: shows the drives and hardwares connected to the machine.
    Recycle Bin: shows documents that have been deleted.
    Personal: shows the user's home directory.

    Right-clicking "Computer" and selecting "Properties" shows the current system version, kernel version, and other related information.

    Fig. 2 "Computer" - "Properties"-big

    Context Menu

    Right-click on the desktop blank area to display the context menu, as shown in figure below.

    Fig. 3 Right-click Menu

    Some of the options are described in table below.

    NewCreates folders, documents, and WPS files.
    View typeDisplays small, medium, large, or super large icons.
    Sort bySorts files by name, type, size, or date of modification.


    Basic Function

    The taskbar is located at the bottom and includes the start menu, multi view switch, file browser, Firefox, WPS, and tray.

    Fig. 4 Taskbar

    Start menu: Open the start menu to find applications and files.
    Multi view switch: Operate in multiple workspaces.
    File browser: Browse and manage documents in the system.
    Firefox: Access the Internet conveniently and safely.
    WPS: Perform the most commonly used office operations to process text, tables, and presentations.
    Window Display AreaThe blank area in the middle of the task bar displays the running programs or opened documents, and allows you to close and top the window.
    Tray: Change settings for sound, Kylin Weather, internet connection, input method, notification center, date, and night mode.
    Show DesktopThe button on the far right is used to minimize all windows on the desktop or restore the windows.

    Multi View Switch

    Click the icon "" on the taskbar to enter the interface shown in figure below, and select the operation area that users need to work on at the moment in multiple work areas.

    Fig. 5 Multi View Switch-big

    Preview Window

    Users move the mouse over the app icon in the taskbar, and then a small preview window will be shown if this app has already been opened.

    Hover over the specified window as shown below for hover state, the window will be slightly fuzzy glass effect (left), the rest of the window as default Status (right).

    Fig. 6 Taskbar - Preview Window

    Users can close the application by right-clicking on the app icon in the taskbar.

    Fig. 7 Taskbar - Right-click Preview

    The sidebar is located at the right of the entire desktop. Click the icon "" in the taskbar tray menu to open the storage menu, and click the icon "" in Sidebar to pop up the sidebar as shown in figure below.

    The sidebar consists of two parts: Notification Center, Clipboard and Widget.

    Fig. 8 Sidebar without message status-big

    Notification Center

    Notification center will display a list of recent important and newest information.

    Select "Clear" in the upper right corner to clear the list of information; Select "Setting" in the upper right corner to go to the notification settings in the control center, and users can set which applications can show information and the quantity of information.

    Fig. 9 Notification Center-big

    Workspace at right side can be set to fold by applications.

    Fig. 10 Fold messages by applications-big

    Icon "" at the top right corner of the sidebar can store unimportant information. When the messages are more than 999+, it will be shown as the form of which means limitless.

    Fig. 11 Message Organizer


    Clipboard can save the contents those were recently selected to copy or cut, and users can operate them by using the icons in Table.

    Fig. 12 Clipboard

    Clicking "", users can edit the the contents of the clipboard.

    Fig. 13 edit the content

    Copy the contentEdit the content
    Delete the content

    The second label of the clipboard is the small plug-in that contains alarm clock, sticky notes, and user feedback.

    Fig. 14 Plug-in

    Tray Menu

    Storage Menu

    Click "" at the tray menu to open the storage menu.

    It contains Kylin Weather, Input Method, Bluetooth, USB, etc.

    Fig. 15 Storage Menu

    Input Method

    The taskbar input method defaults to Sogou input method. Use the shortcut key "Ctrl+Space" to switch it out, and the "Shift" key to switch between Chinese and English modes.

    Fig. 16 Input Method


    When a USB flash drive is inserted, the dat inside is automatically read.

    Click "" to open the window as shown in figure below.

    When users need to umount the USB, please click the icon "".

    Fig. 17 The status of USB

    Power Supply

    Click the icon "":

    When no power supply is detected.

    Fig. 18 No Power Supply

    When power supply is detected.

    Fig. 19 Have Power Supply

    Users right-click the icon "" of power manager to open the power setting menu.

    It provides two setting options: adjust screen brightness, and set power and sleep.

    Fig. 20 Power Manager

    If the power manager pops up a"low battery" window, users can click to turn on the power save mode, and the power manager will set the machine to run in this mode immediately.

    Fig. 21 Power Saving Mode


    Users can choose wired or wireless network connections by clicking the icon "" of network manager.

    Connection limitedLocked
    ConnectingWifi connected
    Wifi unconnectedWifi connection limited
    Wifi lockedWifi connecting

    Fig. 22 Network Connection

    • Wired Network In the wired network connection interface, click on the wired network plan to expand. Details of the network.

      Fig. 23 Wired Network

    • Wireless Network Click the switch button in the upper right corner to turn on the wireless network connection, and select the WiFi from the list of available wireless networks. Enter the password to access the Internet.

      Fig. 24 Wireless Network

    • Network Setting Right-click the icon "" of network manager to pop up the setting menu.

      Fig. 25 Wired Network Setting

      Click network setting to go to the setting window immediately.

      Fig. 26 Network Setting


    Click the icon "" to open the volume window, and there provides three modes.

    • Mini Mode It only displays the volume of the speaker.

      Fig. 27 Mini Mode

    • According to Equipment It contains input equipments and output equipments.

      Fig. 28 According to Equipment List

    • According to Application It contains system volume and other applications' volume.

      Fig. 29 According to Application List


    Click the date&time on the taskbar to open the calendar window.

    Users can view the day's information by filtering the year, month, day. The date will be displayed in large letters, with the time, the week, the festival,and the lunar calendar. Taboos can be seen by checking.

    Fig. 30 Calendar-big

    Night Mode

    Click the icon "" on the Taskbar and then the system changes to the night mode.

    Advanced Setting

    Right-click the Taskbar to open the menu.

    Fig. 31 Right-Clicking Menu

    Users can set the layout of taskbar in "Taskbar Settings".


    Window Manager

    The functions provided as shown in Table.

    Title BarShow the title name of current window
    Minimize/Maximize/CloseThe three icon buttons at the right of the title bar correspond to minimize, maximize and close respectively
    Side SlidingUsers can scroll up and down to view the page by the slider at the right of the window
    StackAllow overlap among windows
    Drag and DropLong press the left mouse button at the title bar to move the window to any position
    ResizeMove the mouse to the corner of the window and long press the left button to resize the window

    Window Switch

    There are three ways to switch windows:

    • Click the window title on the Taskbar.

    • Click the different window at the desktop.

    • Use shortcut keys < Alt > + < Tab >.

    Start Menu

    Basic Function

    Click the button to open the "Start Menu".

    It provides sliding bar.

    Fig. 32 Start Menu

    Category Menu at right side

    When the mouse is over the right side of the start menu, it will appear a pre-expanded cue bar. Clicking to expand, and then three categories are showing at the right side by default: "Common Software", "Alphabetical Category", and "Functional category".

    • All Software: List all software, recently used software will be displayed on the top of this page.

    • Alphabetical Category: List all softwares by first letter.

    • Functional category: List all softwares by their functions.

    Users can click the button at top right corner to view full-screen menu mode.

    Fig. 33 Full-screen Menu-big

    Function Button at right side

    It provides User Avatar, Computer, Control Center and Shutdown four options.

    User Avatar

    Click "" to view user's information.


    Click "" to open personal home folder

    Control Center

    Click "" to go to the control center.

    Lock Screen

    When users do not need to use the computer temporarily, the lock screen can be selected (without affecting the current running state of the system) to prevent misoperations. And input the password to re-enter the system.

    The system will automatically lock the screen after a period of idle time by default.

    Fig. 34 Lock Screen-big

    Switch Users & Log Out

    When users want to select another user to log in using the computer, users can select "Log out" or "Switch user".

    At this point, the system will close all running applications; Therefore, please save the current jobs before performing this action.

    Shutdown & Reboot

    There are two ways:

    1)"Start Menu" > "Power" > "Shutdown"

    It will pop up a dialog box, and users can choose shutdown or reboot as needed.

    Fig. 35 Shutdown Dialog Box-big

    2)"Start Menu" > right side menu of the "Shutdown" button > "Shutdown"/"Reboot"

    The system will shutdown or reboot immediately without popping up the dialog box.

    Advanced Setting

    Right-clicking Start Menu, it provides lock screen, switch user, log out, reboot, and shutdown five shortcut options.


    Users can search apps in the search box by key words. As shown in figure below, the result will show up automatically with the input.

    Fig. 36 Search Apps

    Right-clicking one app in the Start Menu, the right-click menu popping up.

    Fig. 37 Right-click Menu

    The options are described in table below.

    Attach to "All Software"Add the selected software to the top of the list of All Software
    Attach to TaskbarGenerate icon for the application on the Taskbar
    Add to Desktop ShortcutGenerate shortcut icon for the application on the desktop
    UninstallRemove the application


    I Cannot Login to the System After Locking the Screen

    • Switch to character terminal by pressing Ctrl + Alt + F2.

    • Input the user-name and passwd to login to the system.

    • Do "sudo rm -rf ~/.Xauthority".

    • Switch to graphical interface by pressing Ctrl + Alt + F1, and input the password.


    Shortcut Key

    Shortcut KeyFunction
    F5Refresh the desktop
    F1Open the user-guide
    Alt + TabSwitch the window
    winOpen the Start Menu
    Ctrl + Alt + LLock Screen
    Ctrl + Alt + DeleteLog out

    Bug Catching

    Buggy Content

    Bug Description

    Submit As Issue

    It's a little complicated....

    I'd like to ask someone.


    Just a small problem.

    I can fix it online!

    Bug Type
    Specifications and Common Mistakes

    ● Misspellings or punctuation mistakes;

    ● Incorrect links, empty cells, or wrong formats;

    ● Chinese characters in English context;

    ● Minor inconsistencies between the UI and descriptions;

    ● Low writing fluency that does not affect understanding;

    ● Incorrect version numbers, including software package names and version numbers on the UI.


    ● Incorrect or missing key steps;

    ● Missing prerequisites or precautions;

    ● Ambiguous figures, tables, or texts;

    ● Unclear logic, such as missing classifications, items, and steps.


    ● Technical principles, function descriptions, or specifications inconsistent with those of the software;

    ● Incorrect schematic or architecture diagrams;

    ● Incorrect commands or command parameters;

    ● Incorrect code;

    ● Commands inconsistent with the functions;

    ● Wrong screenshots.

    Risk Warnings

    ● Lack of risk warnings for operations that may damage the system or important data.

    Content Compliance

    ● Contents that may violate applicable laws and regulations or geo-cultural context-sensitive words and expressions;

    ● Copyright infringement.

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    Bug Catching
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