RDP 连接 KDE Plasma 6 (krdp) 报错 decode error 导致断开连接 #1644

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1. coderabbitai

   added

   bugSomething isn't workingSomething isn't working

   libcaused by third-party libcaused by third-party lib

   on Oct 5, 2026
2. winnowl commented on Oct 5, 2026

   

   winnowlBot

   on Oct 5, 2026 – with Winnowl

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   Issue triage

   Feasibility:needs-clarification ｜ Risk:medium

   Information needed to reproduce:

   • Does this occur consistently, and which Fedora release, KDE Plasma/krdp versions, and ServerBox build are involved?
   • Does the same server accept connections from another RDP client (for example, FreeRDP), and do those sessions work?
   • Can you provide client and krdp/server logs around the disconnect, including negotiated RDP capabilities and security settings?
   • Is the connection direct or through an SSH tunnel, and if tunneled, how is local port forwarding configured?
   • Does changing the server’s display resolution, color depth, or RDP graphics/codec settings affect the disconnect?

   Suggested labels(not applied automatically):bug, RDP, krdp
3. StarryHui commented on Oct 5, 2026

   

   StarryHui

   on Oct 5, 2026

   Last edited by StarryHui

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   1. 复现频率与具体版本：

      • 复现概率：100% 稳定复现，每次连接都会出现。
      • 系统版本：Fedora 44 (x86_64)
      • 桌面环境：KDE Plasma 6.7.5 (Wayland 会话)
      • krdp 版本：krdp-6.7.5-1.fc44.x86_64
      • 客户端版本：ServerBox 1.0.1719（Xiaomi HyperOS 3.0.302.0）

   2. 其他客户端对比：

      • 使用windows app可正常直连并稳定保持桌面控制会话，不会发生异常断开。

   3. 连接拓扑与转发方式：

      • 走 SSH 隧道转发连接。
      • 目标主机配置为 127.0.0.1，端口 3389。
      • SSH 隧道和认证均能正常建立，电脑桌面端也会正常弹出“远程控制会话已开始”的通知。

   4. 报错日志与原因推断：

      • 断开发生在身份认证完成后的初次 PDU 数据包解码阶段：

        [decode error @ /rustc/.../library/core/src/ops/function.rs:250] decode error, caused by:
        [decode_send_data_indication @ .../ironrdp-core-0.2.1/src/error.rs:248] other (received disconnect provider ultimatum)
        

      • 疑似是 ironrdp-core 在解析 KRDP 基于 Wayland/PipeWire 协商图形通道（EGFX / 视频推流）发送的 send_data_indication PDU 数据包时解析失败，导致服务端下发了断开连接的最后通牒（provider ultimatum）。
4. lollipopkit commented on Oct 20, 2026

   

   lollipopkit

   on Oct 20, 2026

   Owner

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   请尝试1816版本