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September Community Data Overview
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Community Products
deepin 25.2.2 Update: Window Split-Screen · Liquid Glass Effect
On September 8, the deepin 25.2.2 official release was launched.
The two most noticeable new features in this update come from the Treeland desktop environment;
Window split-screen supports quickly tiling windows to the left or right side of the screen, making multitasking more efficient;
The liquid glass effect replaces simple blurring with physical refraction, enriching the desktop's visual hierarchy. The Treeland underlying layer has been synchronized with upstream, removing the qwlroots dependency and upgrading to wiroots 0.20, adding support for pointer-constraints and relative-pointer protocols, and improving mouse interaction in games and 3D applications.
At the system level, this update fixes multiple issues in system updates, the Panshi system and file management, input methods, document viewers, screenshot and screen recording, and other commonly used applications; improves connectivity for some MTK wireless network cards; enhances compatibility and recognition capabilities for some domestic graphics card platforms, graphics audio devices, and LPDDR5X memory; and fixes multiple security vulnerabilities in foundational components such as GLib, GStreamer, Ghostscript, curl, X.Org, and XWayland.
The Linglong application update on September 24 focused on fixing issues such as missing desktop and taskbar icons after some Linglong applications were upgraded, failure to start normally, and abnormal host resource mounting, while also optimizing the DBus service security mechanism.
Xiao U: Unified Scheduling and Multi-Agent Collaboration · Scenario-Based Recommendations
Xiao U released version 3.3.0, upgrading around "on-demand loading and faster response": Xiao U automatically selects the required tools or dedicated sub-agents based on the task, loading only the capabilities needed for the current task; built-in tools, MCP, Skills, and sub-agents are unified into a single capability catalog, and conversations no longer inject the full set of tool definitions, making first-token response faster in ordinary conversations.
The homepage adds scenario-based recommendations; clicking one automatically presets the scenario, allowing users to quickly start writing, data analysis, or automated tasks; the creation and editing of automated tasks supports selecting a workspace, with tasks defaulting to the "Automated Tasks" workspace; settings such as deep thinking and permission mode are now saved independently per session, and are automatically restored when switching or reopening a session.
Tongxin Windows Compatibility Engine: Automatic Repair for .NET Installation Failures · Optimized Component Installation Logic
In September, the Tongxin Windows Application Compatibility Engine was updated to 4.0.2: added the deepin-wine-extras package as a recommended dependency, adapted to the latest dde dbus interface; supports automatic identification of .NET installation failures and provides repair solutions, optimizes the vcredist2022 component installation logic; and fixes the issue of delayed loading of the wine version list in the advanced debugging interface.
Deepin Home & Forum
In September, Deepin Home, the forum, and other channels received a total of 147 user bug reports and feature request records, including:
- A total of 104 bug reports: 8 resolved, 14 replied to, 3 in reproduction, 6 in development, 73 pending;
- A total of 43 feature requests: 19 included in the requirement pool, 3 completed, 14 replied to, 7 pending.
Community SIGs.
deepin-kernel SIG.
Kernel version updates: updated minor versions 6.18.48–6.18.53 with a total of 3,918 patches, and minor versions 6.6.147–6.6.155 with a total of 1,510 patches; updated test versions 7.2.3–7.2.6 to prepare for the 7.3 release;
Hardware support enhancements: fixed the issue where Phytium network cards did not work on some older Phytium machines;
Fixed an issue in the AMD P-state driver that prevented it from entering active frequency scaling mode on systems without autosel support.
merged in Qinheng Microelectronics ch343 and ch9344 serial port drivers and Phytium SPI driver patches; updated the LeapRAID driver for Zongcun Technology RAID cards to v2.00.01.10 across all kernel branches;
Stability and performance optimization: on x86 in the 6.18 branch, lazy RCU is enabled by default to optimize power saving and battery life, and the bore scheduler patch has been re-imported; the arm64 architecture no longer compiles the pseudo-NMI interrupt debugging feature by default to optimize performance; merged in the iocost boost cgroup reservation capability, allowing a cgroup to maintain its full IO share for a period of time, providing the ability to schedule IO for commonly used system applications; merged upstream IMA refactoring patches to optimize the corresponding subsystem performance; merged a batch of upstream LoongArch fixes; continued macro- and micro-level kernel performance optimization analysis and tracked and resolved issues reported by community users.
deepin-sysdev-team.
Upstream version updates: In September, a total of 85 repositories completed substantive functional or security updates, covering glibc, systemd, qt6-base, qt6-declarative, xorg-server, pipewire, gvfs, ffmpeg, qemu, libvirt, openssh, nginx, bind9, bluez, network-manager, unbound, etc.;
LTO enabled-by-default transformation: dpkg now enables link-time optimization (LTO) by default on amd64, arm64, sw64, and loong64, and introduces lto-disabled-list (containing 116 source packages that failed to rebuild) and lto-enabled-list (whitelist) accordingly. The LTO enablement strategy has been reversed from a "blacklist" to a "whitelist," while retaining a per-package escape hatch in DEB_BUILD_MAINT_OPTIONS;
Important feature updates: systemd released 12 consecutive versions from deepin68 to deepin79 and integrated upstream backport patches in three batches; unbound was upgraded as a whole to the current upstream version, fixing 34 security vulnerabilities at once (including 1 CRITICAL); plymouth added dconfig custom boot themes; TLP added WOL_ENABLE network wake-up and non-PCI (SoC/platform) network card support; glibc, xorg-server, qt6-base, gtk+3.0, gvfs, pipewire, etc. completed multiple stability fixes;
Security fixes: A total of 146 CVEs were fixed, involving 22 repositories — unbound 34, rsync 29 (with the patch series rebuilt as a whole according to the upstream v3.4-stable security branch), ffmpeg 21 (including 1 critical), bind9 12, as well as pcre2, libpcap, glibc, expat, nginx, bluez, strongswan, openssh, openvpn, etc.;
New software packages: eza (an ls replacement written in Rust), lto-disabled-list, lto-enabled-list; another 12 source packages completed their first deepin revision build into the deepin-community repository;
Loongson / Sunway architecture support: llvm-toolchain-21 added sw64 architecture support (porting the backend and clang-side support from llvm-toolchain-17); libbpf restored sw64 support; gnutls28, lrzsz, etc. added sw64 support; libseccomp fixed sw64 unit tests; libjpeg-turbo, xnnpack, bind9, etc. completed loong64/sw64 adaptation;
DDE SIG.
dde-shell: The taskbar "Fashion Mode" has been initially completed, supporting a card-style plugin dock; adapted to new Treeland protocols (task manager adapted to v2 toplevel, show desktop adapted to show-desktop-v1); fixed issues such as notification center bubbles stealing focus, crashes when the application access model is destroyed, and tray popup flickering; dde-tray-loader supports displaying Bluetooth device battery level, and plugins support dock card surfaces;
Launcher: the dde-launchpad windowed launcher switched to ApplicationWindow, fixed drag-binding loop warnings, added layer shell scope for the quick launcher window, and corrected dock size calculation;
Control Center: dde-control-center added the --list option to export the module tree, making it easier to troubleshoot incomplete plugin loading; "About This PC" supports custom customer logos; fixed blurry theme thumbnails under HiDPI; the display module's screen edge snap threshold now scales with screen width, and Treeland extensions are bound through the Qt registry; refactored the time zone/NTP dropdown UI; the sound module added AI noise reduction support (subsequently rolled back); startup acceleration optimization and multilingual translation updates;
Backend services: dde-daemon fixed main screen inheritance in mirror mode, detects and refreshes display gamma capabilities, adapted to Treeland keyboard layouts, and completed multiple brightness and power-saving fixes; the touchpad no longer ignores the system touchpad, and the camera supports tiered disabling of hotkeys with hardware persistence; removed insecure Bluetooth D-Bus data exposure; power services were taken over by dde-services;
Application management: dde-application-manager adapted to the Treeland prelaunch splash protocol rename (build requirement treeland-protocols > 0.5.10); fsync after writing autostart files to avoid loss during hard restarts; hardened the app-update-notifier systemd service sandbox;
Treeland: Treeland was upgraded to v0.10.0, densely implementing new protocols — region-watch (region monitoring), active-notify, decoration (window decoration), appearance 0.6.0 split, xwindow-control (window position control), layer-shell extension, foreign-toplevel manager v2; window management added four-quadrant edge tiling and edge tiling preview animation, and changed "minimize" to an independent flag orthogonal to surface state; added configurable XKB keyboard settings and per-seat DConfig; under multiple monitors, new windows are placed on the output where the cursor is located; the login view is globalized and follows the cursor output, and wallpaper highlights use OKLCH processing; Xwayland respects above/below states, synchronizes transient window stacking, and supports cross-UID MIT-SHM; fixed issues such as remote subsurface lifecycle, show-desktop cancellation, surface unmapping, and greeter user deduplication, and added a large number of protocol tests; xdg-desktop-portal-dde fixed the issue where OBS could not record the screen through PipeWire;
DTK development kit: dtkwidget fixed breadcrumb text width constraints and overflow ellipsis, and multiple fixes for printer paper size and print list; dtkgui released 6.7.49 and is compatible with Qt6; dtkdeclarative added a split-screen menu to the title bar, and fixed implicit Popup sizing under Qt6 and DCI icon mixed-DPI scaling; qt5platform-plugins added split menu support for Wayland and XCB;
dde-port SIG.
- Improved DDE compatibility under treeland and continued handling portability issues;
deepin-ports SIG.
Key device adaptation: Completed the merge of SpacemiT K1/K3 series private extensions in the next repository (involving GCC 15/16 and binutils); enabled GGML and deepin-modelhub acceleration for K1/K3 and pushed device support repositories; tested uos-ai running local models on K3, with noticeable performance improvement; updated the K3 device image and flashing partition guide; deepin-ports-kernel supports configuring multiple toolchains and introduced the general 7.3 kernel from RevyOS;
RVA23 / next repository construction: Created the deepin-ports GitHub organization, the build system project next, and the webhook for automatically triggering builds, forking software packages from the repository that differ from the mainline; fixed the error where deepin-installer reported that the locale.alias file did not exist when updating under the new glibc; img-gpu-bin added the open-source driver firmware firmware-imggpu-open-source;
OSPP 2026: Both projects have completed screening and review and entered the formal work stage, and progress has been synchronized with participants and relevant permissions granted.
For more details, see: deepin-ports SIG blog.
deepin-translation SIG.
- Feedback and corrections were made for encountered translation errors, with continuous updates to multilingual translations including Spanish, Japanese, Italian, German, Arabic, Ukrainian, French, Indonesian, Russian, and others.
If you would like to participate in deepin R&D-related contributions, you are welcome to join the following groups to discuss with other contributors.
Community Ecosystem
Recently, the app store completed a total of 755 application review tests, promoting the listing of 564 applications, including 155 brand-new applications. Multiple mainstream office and daily-use software received version iterations: WeChat received a major update, adding capabilities such as voice input, combined image and video display, group checkin, dynamic emoji previews, and scrolling screenshots; VirtualBox virtual machine, WorkBuddy, Nami Work, Qianwen Office, QQ, Alibaba Mail, Chrome, TickTick, Bilibili, Tencent Docs, Firefox, and other applications were upgraded simultaneously.
The Linglong application section was also active with updates, with popular tools such as Bilibili, OBS Studio, Krita, Inkscape, VLC media player, DeepSeek Harness, QGIS LTR/QGIS, FSearch, Brave browser, HMCL Minecraft Launcher, Chrome, Firefox, and Blender completing version iterations.
The ecosystem cobuilding group steadily advanced application adaptation work. A total of 67 developers from the group enthusiastically participated in ecosystem construction work, maintaining a total of 148 applications in various forms, specifically including 45 deb open-source applications and 103 Linglong applications. We hereby express sincere thanks to all the friends who have contributed to the deepin ecosystem, and we sincerely invite more partners to submit high-quality applications through the deepin community to jointly build an open and diverse community application ecosystem.
Community Activities
WHLUG September Recap | An In-Depth Conversation on Linux Desktop and Systems
On the afternoon of September 19, the latest offline tech salon hosted by WHLUG (Wuhan Linux User Group) came to a successful conclusion.
This event featured four technical talks and one user lightning talk,
covering topics from deepin's next-generation Wayland desktop compositor TreeLand and the C language cross-platform GUI library wiframe, to eBPF and DKapture system observability practices, and then to the user-space solution deepin-liferaft for handling memory pressure, discussing those noteworthy technologies in the recent Linux and deepin communities; a developer from Wuhan University also introduced the operating system kernel project A20 OS during the lightning talk session.
After the sharing session, developers continued to discuss topics such as the Wayland desktop ecosystem, eBPF toolchain, C language GUI, and memory management over afternoon tea, still wanting more. For the full review, see the forum post:
WHLUG September Recap | An In-Depth Conversation on Linux Desktop and Systems