deepin 25 Alpha has enhanced system-level product functionality and personalized management capabilities to provide users with a complete desktop environment. This version continues design improvements and functional optimizations for the deepin Solid Operating System, UOS AI, and Control Center modules (wallpaper, screensaver, power management, mouse, touchpad, etc.), now meeting daily usage and management needs while integrating features requested by user feedback.

Important Notes:

1、For users who installed deepin 25 Preview via custom installation (non-full-disk installation):

After completing the system upgrade and rebooting, execute the following three commands:

sudomount-o remount,rw /sysroot

sudomount-o remount,rw /boot

sudo deepin-immutable-ctl admin deploy

Reboot the system again after executing these commands to ensure normal future system upgrades.

2、The Linyaps application in this version has not been updated. Use the ll-cli upgrade command for upgrades. To upgrade the browser separately, use ll-cli upgrade org.deepin.browser.

3、deepin 25 Alpha contains known unresolved issues that will be addressed through periodic updates for bug fixes.

4、This is an Alpha release and is not recommended for production environments.

 

I. Core Feature Additions and Optimizations

1.1 Linyaps

Linyaps is a software package management tool independently developed by deepin, designed to address long-standing issues in Linux software ecosystems such as dependency conflicts, fragmented distribution, and high security risks.

Based on mechanisms like User Namespace and CGroup, Linyaps provides a unified application runtime environment decoupled from the operating system. This environment includes libraries and dependencies commonly used by desktop applications such as Qt, supports multi-version coexistence, and implements a "one architecture, one build" model.

Currently, Linyaps supports major distributions including deepin, UOS, openEuler, and Ubuntu, and is compatible with AMD64, ARM64, and LoongArch platforms. It enables one-click conversion of deb, AppImage, and Flatpak formats into Linyaps packages. Applications can also be distributed globally through the standalone public Linyaps Store. As of the end of 2024, over 3,000 applications have been adapted.

1.2 deepin Solid Operating System

  • Optimized the technical solution to resolve slow application installation issues.
  • Improved backup logic by removing automatic system backup triggers during application installation.

1.3 Installer

  • Adjusted EFI partition size to 300MB.
  • Enhanced prompt messages for abnormal scenarios during system installation.
  • Refined interface text content of the installer.

1.4 DDE (deepin Desktop Environment)

  • Completed the redesign and functional enhancement of the personalization module.
  • Completed the redesign and functional enhancement of the power management module.
  • Completed the redesign and functional enhancement of the sound module.
  • Completed the redesign and functional enhancement of the Bluetooth module.
  • Completed the redesign and functional enhancement of the default applications module.
  • Completed the redesign and functional enhancement of the notification center.
  • Completed the redesign and functional enhancement of the mouse and touchpad module.
  • Completed the redesign and functional enhancement of the display module.
  • Added support for solid-color wallpaper settings with user-defined color values.
  • Introduced customizable time ranges for Eye Comfort Mode.
  • Added animation demos in the touchpad module to help users understand basic functionalities.
  • Added customization support for three-finger and four-finger gestures on touchpads.
  • Added the Smart Mirror Source module, configurable during system updates.
  • Added audio channel merging feature to address missing audio output in specific scenarios.
  • The audio framework now defaults to Pipewire, with future support for all audio devices under Pipewire.
  • Added backup and restore entry for quick system backup, restoration, and factory reset operations in the system module.

1.5 Browser

  • Updated the in-house browser version to improve application stability.
  • Added a dark theme mode and optimized the interface display experience in dark theme mode.
  • Optimized browser user experience on touchscreen devices.

Note: The current browser version has not been upgraded. Use ll-cli upgrade org.deepin.browser to upgrade.

1.6 UOS AI

  • Added support for configuring DeepSeek online models.
  • Added one-click deployment capability for the DeepSeek 1.5B local model via the UOS AI graphical interface.

1.7 Language Notepad

  • Added support for voice dictation and text-to-speech functionality via the right-click context menu.
  • Added support for text transcription through voice input.

1.8 Text Editor

  • Added support for voice dictation and text-to-speech functionality via the right-click context menu.
  • Added support for text transcription through voice input.

1.9 Subsystem

  • Added support for displaying subsystem information in the terminal title bar.

 

II. Issue Fixes

2.1 Installer

  • Fixed the issue where the system did not prompt users when an existing EFI partition size failed to meet installation requirements.
  • Fixed the issue where dialog list option values in the system configuration settings could be modified.

2.2 Control Center

  • Fixed the issue where user actions were not recorded after re-opening the Control Center with system proxy enabled.
  • Fixed the issue where apps installed via terminal did not display icons in the launcher.
  • Fixed the issue where wireless network passwords could not be entered using the numeric keypad.
  • Fixed the inconsistency where the proxy button in the Control Center did not sync when enabling system proxy via the quick panel.
  • Fixed the issue where the login interface did not adjust dynamically when the mouse was on an external monitor in multi-screen setups.
  • Fixed the issue where the taskbar did not auto-hide when windows were maximized with Smart Hide enabled.
  • Fixed the issue where the mouse cursor jumped abnormally during normal use of WPS Spreadsheets.
  • Fixed the "update download failed" error message during system updates in the Control Center.
  • Fixed the issue where the clipboard did not appear on the designated primary screen in multi-screen setups.
  • Fixed the issue where the Control Center failed to recognize new apps for default application settings.
  • Fixed the issue where files with spaces in their names could not be opened via double-click.
  • Fixed the issue where the keyring prompt dialog appeared after system reboot with both "Auto Login" and "Password-Free Login" enabled.
  • Fixed the issue where folders in SMB shares did not refresh automatically upon entry.
  • Fixed the issue where the launcher's full-screen mode did not display on the configured primary screen in multi-screen setups.
  • Fixed the issue where clipboard content could not be pinned or pasted after double-clicking.
  • Fixed miscellaneous UI-related bugs.

2.3 Linyaps

  • Fixed the issue where executing “ll-builder build” in the terminal failed.

2.4 Subsystem

  • Fixed the issue where double-clicking the subsystem in the launcher failed to launch it directly after installation.

2.5 deepin Solid Operating System

  • Fixed the issue where applications could not be installed after disabling system protection.
  • Fixed the slow installation speed of applications via terminal.
  • Fixed the issue where Sunlogin Client failed to launch properly after installation.
  • Fixed the issue where NVIDIA drivers were not successfully installed despite selecting the NVIDIA driver option during installation on machines with NVIDIA graphics cards.
  • Fixed the prolonged delay when executing the exit command after entering developer mode via terminal.

2.6 Browser

  • Fixed the issue where the default new tab page and search engine did not follow system language changes after switching the system language to English.
  • Fixed the issue where clicking the browser icon in the taskbar after minimization caused crashes unexpectedly after a few minutes.
  • Fixed the issue where imported bookmarks were lost after closing and reopening the browser.
  • Fixed the occasional crash during file downloads in the browser.
  • Fixed the issue where the history interface opened via Ctrl + H shortcut failed to display browsing history records.

2.7 Device Manager

  • Fixed the issue where the Device Manager was slow to open and failed to load/display device information.

2.8 UOS AI

  • Fixed the issue where UOS AI invoked a browser that did not follow the system’s default browser setting.
  • Fixed incomplete prompt content display in the UOS AI Bar after dragging files in English language environments.
  • Fixed the issue where the UOS AI Follow-Along feature was unavailable immediately after system startup.

 

III. Known Unresolved Issues

  • The example images in the "Desktop Style Selection" option of the Welcome application still show deepin 20 screenshots.
  • The calendar has not been updated with 2025 statutory holiday information.
  • In multi-boot systems, changes to the boot order do not take effect.
  • The battery icon appears too small in the power management plugin panel.
  • Abnormal selection effects in launcher app group title names.
  • Occasional loss of SMB account passwords after upgrading from deepin 25 Preview to deepin 25 Alpha.
  • AI natural search fails to find relevant results in manual system installation scenarios.
  • Preview information pages for mounted network drives display no content.
  • The Tab key cannot cycle through all icon buttons on the shutdown interface.
  • Occasional installer crashes during partition creation in manual partitioning installations.
  • Occasional disappearance of the touchpad module after enabling "Disable touchpad when mouse is connected" on laptops.
  • Occasional failure of Tab key auto-completion when typing sudo apt install in the terminal.
  • Occasional black screens when capturing screenshots in multi-screen extended mode (adjusting screen positions resolves this).
  • Occasional taskbar overlap over maximized app windows when system scaling is set to 125%.
  • Occasional error messages displayed before reaching the login interface after adjusting screen scaling and logging out.
  • Occasional merging of taskbar app icons during normal usage.
  • Occasional system freeze during configuration phase after full-disk installation on NVIDIA GPU devices.
  • Occasional inability to enter the desktop environment for extended periods after system upgrade reboots.
  • Occasional startup errors when launching the org.virtualbox.virtualbox virtual machine software.
  • Occasional system lag when adding workspaces to primary/secondary screens via Super+S in multi-task view (dual-screen extended mode).
  • Occasional cursor icon style changes on desktop icons when opening the Control Center.
  • Occasional failure of the Smart Hide feature for the taskbar in personalized settings.
  • Occasional failure to open TXT files via the text editor when accessing admin-mode file manager windows.
  • Occasional screen flickering during sleep on Huawei MateBook C233 devices.
  • Occasional system reboots after opening the lid when "Close lid to sleep" is enabled on Lenovo Xiaoxin Pro devices.
  • Persistent display of the initialization data page when opening Disk Manager.
  • Occasional system freezes with unresponsive mouse/keyboard after resuming from hibernation (TTY switching ineffective).

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