Can WSL2 serve as a full Linux desktop machine? I tried the xrdp + XFCE route, and the answer is it doesn’t work.

  • WSL2 was never designed for a complete desktop — Microsoft built WSLg to run individual GUI apps, not to give you a desktop server
  • xrdp assumes a real Linux server — WSL2 has no real display hardware, no VT, no stable networking

Here’s the full post-mortem.

The Issues

Prelude: xrdp binding address misconfiguration

Instinctively wrote address=127.0.0.1, but this version of xrdp controls binding via port=, not address=. Fixed by changing to port=tcp://.:3389.

Issue 1: Black screen or session exits immediately after connecting

Cause: WSLg sets WAYLAND_DISPLAY=wayland-0. XFCE/GTK components prefer Wayland, but xrdp only provides X11.

Fix: Clear Wayland variables in /etc/xrdp/startwm.sh:

unset WAYLAND_DISPLAY
export GDK_BACKEND=x11
export QT_QPA_PLATFORM=xcb
export SDL_VIDEODRIVER=x11

/etc/xrdp/startwm.sh is xrdp’s default session startup script — called by xrdp when a user connects via RDP. Think of it as xrdp’s equivalent of .xinitrc. On a regular Linux server it doesn’t need modification; here it’s used to clear the Wayland variables injected by WSLg.

Issue 2: Desktop elements too small on HiDPI displays

Test environment: 2880x1800 display, Windows scaling at 200%.

Approaches tried:

  • Lowering mstsc resolution to 1440x900 → desktop shrinks with black borders
  • GDK_SCALE=2 global scaling → XFCE crashes outright

Final compromise:

  • GDK_DPI_SCALE=1.5 to scale fonts only (GDK_SCALE changes window geometry, which XFCE can’t handle)
  • Panel icon-size changed from default 16 to 48
  • Panel height set to 64

Issue 3: HOME folder won’t open

Error: 获取文件信息时出错 "/home/.../thinclient_drives"：传输端点未连接。 (Error getting file info: transport endpoint not connected)

Cause: xrdp’s drive redirection creates a FUSE mount point thinclient_drives under the home directory. It doesn’t auto-unmount when the connection drops.

Fix:

sudo umount -l /home/<username>/thinclient_drives
sudo rm -rf /home/<username>/thinclient_drives

Lessons Learned

  • WSLg’s WAYLAND_DISPLAY pollutes X11 sessions — remote desktop setups must clear it manually
  • GDK_SCALE and GDK_DPI_SCALE are fundamentally different: the former changes window geometry, the latter only scales fonts
  • XFCE panel icon size is controlled independently by icon-size, separate from panel height
  • xrdp’s thinclient_drives tends to linger under WSL