Dear deepin community friends,

The new deepin 25.2.2 update is here! This release brings multiple optimizations and bug fixes across Treeland desktop environment, DDE desktop experience, common applications, system updates, and system security.

From window management and touchpad gestures, to mouse interaction in games and 3D applications, to system upgrades, application compatibility, and security – this update further refines deepin’s daily usage, multi‑display, input interaction, and application runtime experience.

We welcome all deepin community members and open‑source enthusiasts to try out the new version, actively report any issues you encounter, and share your feedback and suggestions in the comments!

🚀 New Version Highlights

• Treeland desktop experience comprehensively enhanced: Added window split screen, support for pointer‑constraints and relative‑pointer protocols to improve mouse interaction in games and 3D applications; introduced a new liquid‑glass visual effect; and optimized the way Electron applications run under Wayland, further boosting visual appeal and application compatibility in Treeland.
• Treeland underlying technology continuously upgraded: Removed qwlroots dependency and upgraded to wlroots 0.20, aligning with the latest upstream version; fixed issues with XWayland, window animations, four‑finger gestures, drag‑and‑drop, multi‑display, and various crash scenarios, making Treeland more stable and maintainable.
• DDE desktop interaction further optimized: Improved handling of shortcut keys and touch gestures, delivering more consistent operation responses across X11 and Treeland environments.
• System and common application experience steadily improved: Fixed multiple issues in input methods, file manager, document viewer, music, downloader, calendar, screenshot/recording, image viewer, email, and other frequently used scenarios, enhancing daily stability.
• Hardware compatibility further boosted: Fixed connection issues with certain MTK wireless network cards, and enhanced recognition and compatibility for select domestic GPU platforms, graphics audio devices, and LPDDR5X memory.
• System updates and security continuously strengthened: Fixed multiple anomalies in system updates, the Pangolin system, and update services; also patched several security vulnerabilities in foundational components such as GLib, GStreamer, Ghostscript, curl, X.Org, and XWayland, further improving system stability and security.

Complete Update Changelog

1. New Features & Optimizations

1.1 Treeland

• Added support for pointer‑constraints and relative‑pointer protocols, enabling mouse constraint and relative movement capabilities, significantly improving mouse interaction in games and 3D applications.
• Added window split‑screen, allowing quick tiling of windows to the left or right side for more efficient multitasking.
• Introduced liquid‑glass effect, replacing simple blur with a physically‑based refraction effect, bringing richer visual experience to the desktop.
• Optimized the default startup method for Electron applications under Wayland, further improving compatibility with the Treeland environment.
• Removed qwlroots dependency and upgraded to wlroots 0.20, aligning more closely with the latest upstream and improving maintainability of Treeland.

1.2 DDE

• Optimized handling mechanisms for shortcut keys and touch gestures, delivering more consistent operational responses across X11 and Treeland environments.

1.3 Base Components

• Updated WebKitGTK, UDisks2, NSS, librime, UnRAR, and other base components to further enhance system compatibility and maintainability.

2 Bug Fixes & Stability Improvements

2.1 Treeland

• Fixed crashes that could occur when launching Firefox or returning to the graphical interface from TTY, along with various other crash scenarios, further improving system stability.
• Fixed issues in XWayland such as window maximization, desktop property synchronization, cursor display, and application connections, improving the experience of X11 applications under Treeland.
• Fixed screen‑capture response latency.
• Fixed several window management, window focus, task switching, and cross‑screen display anomalies.
• Fixed animation glitches in window minimization, show‑desktop, and multitasking views, making animations smoother.
• Fixed laggy four‑finger gesture responses, improving touchpad operation experience.
• Fixed issues where drag icons would not display on first drag and abnormal drag states, further improving drag‑and‑drop experience.
• Fixed missing logout option on shutdown screen, default focus anomalies, and incorrect function ordering.

2.2 System Update & Pangolin System

• Fixed the issue where an update success message might still be displayed after a refresh failure.
• Fixed the issue where update logs did not correctly show failure information when system backup failed.
• Fixed incomplete authorization checks in some update service interfaces.
• Fixed invalid links under the root directory of the Pangolin System on ARM64 and SW64 platforms.

2.3 File Management & Input

• Fixed the issue where mount/unmount events could not be promptly notified to applications.
• Fixed the issue where thumbnails for certain image formats would not display in the file manager.
• Fixed English input anomalies in GTK applications and unexpected input method switches after adding a new input method.
• Fixed the issue where some special characters could not be typed via the input method.

2.4 Common Applications

• Fixed crashes that could occur during music playback and abnormal layout states on album pages.
• Fixed sorting ineffectiveness by file name or completion time in the downloader; fixed occasional crashes when repeatedly launching the calendar.
• Fixed issues where full‑screen video recording might terminate automatically, and duplicate progress notifications when transferring large files across devices.
• Fixed the issue where saving a PDF with a long filename failed after editing in the document viewer; fixed window transparency and lag when launching the text editor from the terminal.
• Fixed crashes when opening specific SVG files in the image viewer and abnormal zoom‑in issues when viewing images.
• Fixed the issue where emails with 0‑KB attachments could not be saved or sent in the mail client; fixed display anomalies in the “About” dialog of the photo album.

2.5 Compatibility

• Fixed crashes when launching Linglong applications on some domestic GPU platforms.
• Fixed connectivity issues for certain MTK wireless network cards in the kernel.
• Enhanced recognition and compatibility for certain graphics audio devices and LPDDR5X memory.

2.6 Security Fixes

• Fixed security issues in update services and log viewer, including permission validation, command injection, and information disclosure.
• Patched multiple security vulnerabilities in components such as GLib, GStreamer, Ghostscript, curl, X.Org, and XWayland, further improving system security.

That's all the main update content of this deepin new version!

From the Treeland desktop experience, to system upgrade and application compatibility, and then to base components and system security.

This update not only brought more new experiences that can be directly perceived, but also continuously optimized the stability and compatibility issues encountered during previous use.

Thank every deepin community friend for your continuous support and feedback.

Every real experience and every issue feedback is an important driving force for deepin's continuous improvement.

Welcome everyone to update and experience the new version, and you are also welcome to share your usage feelings and suggestions in the community!

See you in the comments 👋