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Thunar: image thumbnails hide after one second with available thumbnail files if tumbler is not installed

Version information

Thunar 4.20.2-1+deb13u1

Debian Trixie 13.2

Steps to reproduce

  • Available thumbnail files (previously created) located at classic $HOME/.thumbnails path.
  • Tumbler is not installed.
  • Enabled "Image Preview" and "Show Thumbails" in Thunar.

Current behavior

  • Thunar shows thumbnails for about 1 second and then hides them.
  • Continuously refresh (holding F5 pressed) shows thumbnails again.

Expected outcome

  • Not hiding of thumbnails if they already exists.

  • Tumbler is a recommended package not a required package for Thunar therefore Thunar should work fine without it.

  • Ristretto follows this philosophy. If Tumbler is not installed then a message box is shown but thumbnails are show if they already exists.

    ristretto.png

Additional information

Thumbnails hiding after 1 second is synchronized with terminal warnings:

(thunar:28343): thunar-WARNING **: 00:25:13.937: ThunarThumbnailer: Failed to retrieve supported types: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.thumbnails.Thumbnailer1 was not provided by any .service files

(thunar:28343): thunar-WARNING **: 00:25:14.079: Thumbnailer Proxy Failed ... starting attempt to re-initialize

(thunar:28343): thunar-WARNING **: 00:25:14.102: Thumbnailer Proxy Failed ... starting attempt to re-initialize

(thunar:28343): thunar-WARNING **: 00:25:14.209: Thumbnailer Proxy Failed ... starting attempt to re-initialize

(thunar:28343): thunar-WARNING **: 00:25:14.835: ThunarThumbnailer: Failed to retrieve supported types: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.thumbnails.Thumbnailer1 was not provided by any .service files

(thunar:28343): thunar-WARNING **: 00:25:15.836: ThunarThumbnailer: Failed to retrieve supported types: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.thumbnails.Thumbnailer1 was not provided by any .service files

(thunar:28343): thunar-WARNING **: 00:25:15.836: ThunarThumbnailer: Failed to retrieve supported types: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.thumbnails.Thumbnailer1 was not provided by any .service files

It seems that Thunar tries to connect to Tumbler three times and then it hides thumbnails.