[Bug]: Shared clipboard fails on RHEL 10 GNOME (XWayland) guest – X11 backend chosen but libXt/libXmu not installed

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Valutazione

Difficoltà
3/5
Tempo stimato
Mezza giornata
Idoneità per principianti
45/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Attiva
Stack tecnologico
linux
Ambito
desktop

Direzione di ricerca

The failure comes from the X11 clipboard backend (shclx11) when VBoxClient --clipboard -f -vvv runs under XWayland and fails to dlopen libXt.so.6. Start with the clipboard service code that selects the X11 backend and the dlopen call that logs the error, and check how the RHEL guest-additions package declares its X11 dependencies. Done means either a clean fallback or an actionable error when libXt/libXmu are missing, confirmed by the reproduction steps on a RHEL 10 GNOME guest.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

bug
Version

7.2.20

Host OS Type

Windows

Host OS name + version

Windows 11 Build 26100

Host Architecture

x86

Guest OS Type

Linux

Guest Architecture

x86

Guest OS name + version

Red Hat Enterprise Linux 10.2

Component

Guest Additions/Shared Clipboard

What happened?

Shared clipboard does not work in a RHEL 10 guest with a default GNOME (Wayland) desktop, although Guest Additions install successfully and Shared Clipboard is set to Bidirectional.

VBoxClient --clipboard -f -vvv fails with:

shclx11 rtldrNativeLoad: dlopen('libXt.so.6', RTLD_NOW | RTLD_LOCAL) failed: libXt.so.6: cannot open shared object file: No such file or directory
How can we reproduce this?
  1. Install RHEL 10.x with the default "Server with GUI" or "Workstation" environment (GNOME, Wayland only).
  2. Install Guest Additions 7.2.20 (with kernel-devel, gcc, make, perl etc. so the modules build).
  3. Set Devices → Shared Clipboard → Bidirectional, then reboot and log in to GNOME.
  4. Confirm rpm -q libXt libXmu reports both as not installed.
  5. Copy text on the Windows host and try to paste in the guest (and the reverse): nothing is transferred.
  6. Run VBoxClient --clipboard -f -vvv: session type is detected as XWayland, the X11 backend is chosen and fails to dlopen libXt.so.6.
Did you upload all of your necessary log files, screenshots, etc.?
  • Yes, I've uploaded all pertinent files to this issue.
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