[Libreoffice-bugs] [Bug 123595] New: Do not default to KDE5 VCL plugins under LXQt

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=123595

            Bug ID: 123595
           Summary: Do not default to KDE5 VCL plugins under LXQt
           Product: LibreOffice
           Version: 6.2.0.3 release
          Hardware: All
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: UI
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: yen at chyen.cc

Description:
Also reported in https://github.com/lxqt/lxqt/issues/1673

Currently, LibreOffice tries KDE5 and similar VCL plugins if LXQt desktop
environment is detected:
https://cgit.freedesktop.org/libreoffice/core/tree/vcl/source/app/salplug.cxx#n188.

This behavior can cause problems. With SAL_USE_VCLPLUGIN=kde5 or gtk3_kde5,
hitting Ctrl+O makes LibreOffice hang. Meanwhile, there's an error message in
the terminal:

/usr/lib/libreoffice/program/lo_kde5filepicker: error while loading shared
libraries: libKF5KIOFileWidgets.so.5: cannot open shared object file: No such
file or directory

LXQt != KDE. Specifically, kio is not expected to be installed before using
LXQt. I suggest using pStandardFallbackList if LXQt is detected.

Steps to Reproduce:
1. Install LXQt WITHOUT kio 
2. Unset all SAL_USE_VCLPLUGIN environment variables
3. Run LibreOffice
4. Hitting Ctrl+O

Actual Results:
The open file dialog appears

Expected Results:
LibreOffice hangs, waiting for the open file dialog.


Reproducible: Always


User Profile Reset: No



Additional Info:
Environment: Arch Linux x86_64 up-to-date

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