Ubuntu 26.10 Brings Official RISC-V Desktop Images: SpacemiT K3 Pico-ITX Moves to Supported Hardware
On October 9, 2026, Canonical developer vhaudiquet announced on the Ubuntu Discourse that Ubuntu 26.10 “Stonking Stingray” will ship with official desktop images for RISC-V. The final release is scheduled for October 15, 2026, and the SpacemiT K3 Pico-ITX is one of the first boards promoted from community-supported to the Ubuntu-supported hardware list. This is the first time Ubuntu has offered a live desktop ISO for riscv64 — the same installer image that x86 and Arm users are accustomed to — rather than only server or preinstalled board images.
What Changed
| Item | Detail |
|---|---|
| Release | Ubuntu 26.10 “Stonking Stingray”, due October 15, 2026 |
| Architecture | riscv64 desktop ISO with GNOME, matching x86/Arm installer experience |
| Supported board | SpacemiT K3 Pico-ITX added to Ubuntu-supported boards list |
| Host OS for QEMU | Ubuntu 25.10 or later recommended (for recent enough QEMU with RVA23 support) |
| Status today | Experimental daily images available; final images ship with 26.10 release |
| LTS support | Ubuntu 26.04 LTS does not receive K3 support; this arrives with 26.10 only |
The significance is practical, not symbolic. A new architecture only becomes useful when everyday software shows up for it. An official desktop ISO gives RISC-V boards the same on-ramp that made Arm SBCs approachable: one familiar installer, a standard package archive, and a familiar GNOME desktop.
The SpacemiT K3 Pico-ITX at a Glance
| Spec | Value |
|---|---|
| SoC | SpacemiT K3 (RVA23-compliant RISC-V AI CPU) |
| CPU clusters | 8× X100 performance cores + 8× A100 AI cores |
| General compute | 130K DMIPS |
| AI compute | 60 TOPS INT8 |
| Form factor | Pico-ITX |
| Memory | Up to 32 GB LPDDR5 |
| Storage | Onboard UFS + NVMe via M.2 |
| Display | HDMI/DP (mainline display patches cherry-picked for 26.10) |
The K3 Pico-ITX was previously documented only in Ubuntu’s community-supported section. With 26.10 it moves to the supported-boards page because Canonical’s kernel team cherry-picked a series of K3 display patches so a graphical desktop works at all.
Installing on the K3 Pico-ITX
Canonical’s announcement points to two routes. The hardware route uses the stonking-desktop-riscv64 daily ISO from Ubuntu’s cdimage server and the K3 install guide in the Ubuntu hardware docs.
- Download the daily
stonking-desktop-riscv64ISO fromcdimage.ubuntu.com. - Put the K3 Pico-ITX into fastboot mode (hold the FDL button while powering the first USB-C port).
- Flash the board partitions according to the Ubuntu K3 hardware guide.
- Boot from the installed image and complete the GNOME first-run setup.
SpacemiT’s own Bianbu distribution is still the better choice if you need the vendor BSP features that mainline has not yet picked up: full UFS stability, all 16 cores enumerated, A100/NPU tooling, and power/thermal management. Use Ubuntu 26.10 when you want an upstream-aligned desktop environment.
Running Without Hardware: QEMU Emulation
If you do not have a RISC-V board, you can still test the desktop using the Xubuntu Minimal riscv64 image under QEMU. Canonical explicitly recommends this lighter XFCE-based image for virtual machines because the full GNOME desktop can take more than 30 minutes to load under emulation.
# Host must run Ubuntu 25.10 or later for recent QEMU RVA23 support
qemu-system-riscv64 \
-machine virt \
-cpu rv64 \
-m 4G \
-smp 4 \
-bios /usr/share/qemu/opensbi-riscv64-generic-fw_dynamic.bin \
-kernel /path/to/vmlinuz \
-append "root=/dev/vda1 rw console=ttyS0" \
-drive file=xubuntu-minimal-riscv64.img,format=raw,if=virtio \
-netdev user,id=net0 -device virtio-net-device,netdev=net0 \
-device virtio-gpu-pci \
-display sdl,gl=off
The exact QEMU command is provided in the Ubuntu hardware docs. Emulating the RVA23 profile requires a QEMU new enough to expose the extensions the K3 kernel expects.
What Is Still Experimental
- The images are labeled experimental and have known issues Canonical is working through before release.
- Early builds may be missing the App Center, Prompting Client, and other desktop snaps still being bootstrapped for RISC-V.
- Canonical has not made claims about graphics acceleration; desktop performance on real hardware should be measured after the final image lands.
- The Xubuntu Minimal image is unofficial and unsupported; it exists mainly for VMs.
- Ubuntu 26.04 LTS does not gain K3 support.
Engineering Notes
Two technical details in the announcement are worth noting for builders:
- Flutter on riscv64. The Ubuntu installer UI is built with Flutter, so Canonical needed a riscv64 build of Flutter 3.44.0. The company says it pushed RISC-V support upstream, where it remains under review.
- K3 display patches. The kernel team cherry-picked a set of patches specifically for SpacemiT K3 display support. Without them, a graphical desktop would not work on the board.
Builder Takeaways
- First-class desktop support is arriving. Ubuntu 26.10 is the first release to treat RISC-V as a peer desktop architecture rather than a server-only or board-specific port.
- K3 Pico-ITX is now a validated target. The board moves from community-supported to Ubuntu-supported, which matters for procurement and long-term maintenance.
- Use Bianbu for vendor features, Ubuntu for upstream alignment. Mainline still lacks UFS, A100 enumeration, and power management on K3; plan your stack accordingly.
- QEMU is viable for evaluation. The Xubuntu Minimal image lets developers test the RISC-V desktop without hardware, provided the host runs a recent QEMU.
Related on this site: KVM on the SpacemiT K3 reaches stock distros, K3 PCIe Root Complex upstream v7, K3 Pico-ITX review, and K3 RVA23 architecture.
2026 年 10 月 9 日,Canonical 开发者 vhaudiquet 在 Ubuntu Discourse 宣布 Ubuntu 26.10 “Stonking Stingray” 将提供官方 RISC-V 桌面镜像。正式版定于 10 月 15 日发布,SpacemiT K3 Pico-ITX 也从「社区支持」板卡升级为 Ubuntu 官方支持硬件。这是 Ubuntu 首次为 riscv64 提供与 x86/Arm 相同的 live desktop ISO,而不只是服务器版或预装板卡镜像。
关键变化
| 项目 | 内容 |
|---|---|
| 版本 | Ubuntu 26.10 “Stonking Stingray”,2026-10-15 发布 |
| 架构 | riscv64 桌面 ISO,GNOME 桌面,与 x86/Arm 安装体验一致 |
| 支持板卡 | SpacemiT K3 Pico-ITX 进入 Ubuntu 官方支持列表 |
| QEMU 宿主机 | 建议 Ubuntu 25.10 或更新(以获得支持 RVA23 的较新 QEMU) |
| 当前状态 | 实验性每日镜像已可下载;正式镜像随 26.10 发布 |
| LTS 支持 | Ubuntu 26.04 LTS 不支持 K3;K3 支持仅随 26.10 提供 |
K3 Pico-ITX 规格速览
| 规格 | 数值 |
|---|---|
| SoC | SpacemiT K3(符合 RVA23 的 RISC-V AI CPU) |
| CPU 集群 | 8× X100 性能核 + 8× A100 AI 核 |
| 通用算力 | 130K DMIPS |
| AI 算力 | 60 TOPS INT8 |
| 板型 | Pico-ITX |
| 内存 | 最高 32 GB LPDDR5 |
| 存储 | 板载 UFS + M.2 NVMe |
| 显示 | HDMI/DP(26.10 内核精选了 K3 显示补丁) |
在 K3 Pico-ITX 上安装
- 从
cdimage.ubuntu.com下载每日stonking-desktop-riscv64ISO。 - 将 K3 Pico-ITX 进入 fastboot 模式(按住 FDL 键,给第一个 USB-C 口上电)。
- 按 Ubuntu K3 硬件指南刷写分区。
- 从安装镜像启动,完成 GNOME 首次设置。
如果你需要厂商 BSP 的全部功能(UFS 稳定性、16 核枚举、A100/NPU 工具、电源/热管理),SpacemiT 自家的 Bianbu 发行版仍是更好选择。需要上游对齐的桌面环境时再选 Ubuntu 26.10。
无硬件测试:QEMU 仿真
没有 RISC-V 板卡也能用 Xubuntu Minimal riscv64 镜像在 QEMU 中测试桌面。Canonical 明确推荐这个基于 XFCE 的轻量镜像用于虚拟机,因为完整 GNOME 桌面在仿真下加载可能超过 30 分钟。
# 宿主机需 Ubuntu 25.10+,以获得支持 RVA23 的较新 QEMU
qemu-system-riscv64 \
-machine virt \
-cpu rv64 \
-m 4G \
-smp 4 \
-bios /usr/share/qemu/opensbi-riscv64-generic-fw_dynamic.bin \
-kernel /path/to/vmlinuz \
-append "root=/dev/vda1 rw console=ttyS0" \
-drive file=xubuntu-minimal-riscv64.img,format=raw,if=virtio \
-netdev user,id=net0 -device virtio-net-device,netdev=net0 \
-device virtio-gpu-pci \
-display sdl,gl=off
仍是实验性的地方
- 镜像标注为实验性,Canonical 正在 release 前修复已知问题。
- 早期构建可能缺少 App Center、Prompting Client 等仍在为 RISC-V 做引导的桌面 snap。
- Canonical 未对显卡加速做任何承诺;真实硬件桌面性能应在最终镜像落地后实测。
- Xubuntu Minimal 镜像非官方、不受支持,主要用于虚拟机。
- Ubuntu 26.04 LTS 不会获得 K3 支持。
工程要点
- riscv64 上的 Flutter。Ubuntu 安装器 UI 基于 Flutter,因此 Canonical 需要 Flutter 3.44.0 的 riscv64 构建;该公司称已向上游推送 RISC-V 支持,目前仍在评审中。
- K3 显示补丁。内核团队为 SpacemiT K3 精选了一系列显示补丁;没有它们,这块板无法启动图形桌面。
给开发者的结论
- 桌面级支持正在到来。Ubuntu 26.10 首次将 RISC-V 视为与 x86/Arm 对等的桌面架构,而非仅服务器或特定板卡移植。
- K3 Pico-ITX 成为验证目标。从社区支持升级为官方支持,对采购和长期维护意义重大。
- vendor 功能选 Bianbu,上游对齐选 Ubuntu。主线 K3 仍缺少 UFS、A100 枚举和电源管理;按需选择栈。
- QEMU 可用于评估。只要宿主机 QEMU 够新,Xubuntu Minimal 镜像就能在无硬件情况下测试 RISC-V 桌面。
Краткое содержание (RU)
9 октября 2026 Canonical анонсировала первые официальные RISC-V desktop-образы Ubuntu 26.10 «Stonking Stingray» (релиз 15 октября). SpacemiT K3 Pico-ITX перешёл из разряда community-supported в список официально поддерживаемых плат Ubuntu. Для графического рабочего стола команда ядра cherry-pick патчи для K3, а инсталлятор UI потребовал Flutter 3.44.0 riscv64 (апстрим upstream, в ревью). Ежедневные образы экспериментальны, App Center и некоторые desktop-snap ещё портируются. Для QEMU Canonical рекомендует облегчённый Xubuntu Minimal на хосте Ubuntu 25.10+, потому что GNOME под эмуляцией загружается 30+ минут. Ubuntu 26.04 LTS не получит поддержку K3.
Resumen (ES)
El 9 de octubre de 2026 Canonical anunció las primeras imágenes oficiales de escritorio de Ubuntu 26.10 «Stonking Stingray» para RISC-V (lanzamiento el 15 de octubre). La placa SpacemiT K3 Pico-ITX pasa de community-supported a la lista de hardware oficialmente soportado. Para que el escritorio gráfico funcione, el equipo del kernel aplicó parches específicos del K3, y el instalador requirió Flutter 3.44.0 para riscv64 (enviado upstream, aún en revisión). Las imágenes diarias son experimentales; aún faltan App Center y algunos snaps de escritorio. Para QEMU se recomienda la imagen ligera Xubuntu Minimal en un host Ubuntu 25.10+, porque GNOME tarda más de 30 minutos en cargar bajo emulación. Ubuntu 26.04 LTS no recibirá soporte para K3.
Résumé (FR)
Le 9 octobre 2026, Canonical a annoncé les premières images desktop officielles d’Ubuntu 26.10 « Stonking Stingray » pour RISC-V (sortie le 15 octobre). La carte SpacemiT K3 Pico-ITX passe du statut community-supported à celui de matériel officiellement supporté. L’équipe noyau a cherry-pické des patchs d’affichage K3, et l’installateur a nécessité Flutter 3.44.0 riscv64 (soumis en upstream, en cours de review). Les images quotidiennes sont expérimentales ; App Center et certains snaps desktop sont encore en cours de portage. Pour QEMU, Canonical recommande l’image légère Xubuntu Minimal sur un hôte Ubuntu 25.10+, car GNOME met plus de 30 minutes à charger en émulé. Ubuntu 26.04 LTS ne recevra pas le support K3.
Kurzfassung (DE)
Am 9. Oktober 2026 kündigte Canonical die ersten offiziellen RISC-V-Desktop-Images von Ubuntu 26.10 „Stonking Stingray“ an (Release am 15. Oktober). Das SpacemiT K3 Pico-ITX-Board wandert von community-supported in die Liste des offiziell unterstützten Hardware. Damit der grafische Desktop läuft, hat das Kernel-Team K3-Display-Patches cherry-gepickt; der Installer benötigte Flutter 3.44.0 für riscv64 (Upstream-Submission in Review). Die täglichen Images sind experimentell, App Center und einige Desktop-Snaps werden noch portiert. Für QEMU empfiehlt Canonical das leichte Xubuntu Minimal-Image auf einem Host mit Ubuntu 25.10+, da GNOME unter Emulation 30+ Minuten zum Laden braucht. Ubuntu 26.04 LTS erhält keinen K3-Support.
خلاصه (FA)
در ۹ اکتبر ۲۰۲۶ Canonical اولین تصاویر رسمی دیسکتاپ Ubuntu ۲۶.۱۰ گرسترنگ استینگری (Stonking Stingray) را برای RISC-V معرفی کرد (عرضه ۱۵ اکتبر). برد SpacemiT K3 Pico-ITX از وضعیت community-supported به فهرست سختافزار پشتیبانیشده Ubuntu رفت. تیم کرنل برای کار کردن دسکتاپ گرافیکی روی K3 پچهای نمایش را cherry-pick کرد و نصبکننده به Flutter ۳.۴۴.۰ riscv64 نیاز داشت (ارسال به upstream، در حال review). تصاویر روزانه تجربی هستند، App Center و چند snap دیگر هنوز داشته bootstrap میشوند. برای QEMU از تصویر Xubuntu Minimal خفیف در هست Ubuntu ۲۵.۱۰+ پیشنهاد میشود، چون GNOME در امولاسیون ۳۰+ دقیقه بارگذاری میکند. Ubuntu ۲۶.۰۴ LTS پشتیبانی K3 را دریافت نخواهد کرد.
Sources / 参考来源
- Ubuntu Discourse — vhaudiquet, “Announcing Ubuntu Desktop images for RISC-V”, October 9, 2026
- The Quantum Dispatch — “Ubuntu 26.10 RISC-V Desktop Images: How to Try Them Now”, October 10, 2026
- Liliputing — Ubuntu for RISC-V news roundup, October 10, 2026
- Ubuntu — RISC-V downloads and supported boards
- SpacemiT — K3 Pico-ITX documentation