DiskLinuxThunar

loop-device

Thunar seems to open disk images read-only by default. This makes sense for ISO-images and probably a bunch of other use cases, but not for image files created to be used with LUKS for additional security¹⁾

The workaround is to configure a custom action in Thunar containing the command

udisksctl loop-setup -f %f

References:

man udisksctl

systemddbusgiogvfs

dbus-update-activation-environment SSH_AUTH_SOCK=$SSH_AUTH_SOCK
systemctl --user stop gvfs-daemon
gio mount sftp://ftp.example.com

This doesn't look like a Thunar topic, but it seems to affect Thunar as well, so I put it here

References:

• https://forums.debian.net/viewtopic.php?p=597198#p597198
• man dbus-update-activation-environment

This was done with success with thunar-1.8.14 on Linux Mint 20 Ulyana

apt-get source thunar
cd thunar-*.*.*
export DEBEMAIL="${DEBEMAIL:-<your e-mail address here>}"
export DEBFULLNAME="${DEBFULLNAME:-<your name here>}"
cat >> debian/patches/02_set_default_password_save_never.patch <<EOF
--- a/thunar/thunar-gtk-extensions.c    2024-08-31 14:49:58.042852434 +0200
+++ b/thunar/thunar-gtk-extensions.c    2024-08-31 14:47:57.468107395 +0200
@@ -307,7 +307,7 @@
   screen = thunar_util_parse_parent (parent, &window);
 
   operation = gtk_mount_operation_new (window);
-  g_mount_operation_set_password_save (G_MOUNT_OPERATION (operation), G_PASSWORD_SAVE_FOR_SESSION);
+  g_mount_operation_set_password_save (G_MOUNT_OPERATION (operation), G_PASSWORD_SAVE_NEVER);
   if (window == NULL && screen != NULL)
     gtk_mount_operation_set_screen (GTK_MOUNT_OPERATION (operation), screen);
 
EOF
echo 02_set_default_password_save_never.patch >> debian/patches/series
# <codename> is your Debian (derivate) release codename as "bookworm" or "ulyana".
# You might want to replace "local" by something specific to you or your organisation
dch -l .local~<codename> -D <codename> # Enter line "* Set G_PASSWORD_SAVE_NEVER for default password save option"
 
dpkg-buildpackage -rfakeroot --no-sign
 
# # If it fails due to missing dependencies, install them by
# sudo apt install --no-install-recommends <packages>
# # and redo
# dpkg-buildpackage -rfakeroot --no-sign
 
sudo apt install ../thunar-data_*_all.deb ../thunar_*_amd64.deb
# # If you want to clean up your system, you might want to remove packages installed just for compiling:
# sudo apt purge <packages>

Thunar allows the user to add custom items on file and directory context menus called custom actions. (look for them in the Edit menu) You can specifiy a pattern where the custom items … sorry: actions - appear. By setting this to “Desktop”, the item will appear on the context menu of any folders named “Desktop” - which ist most of the times just the one Desktop.

Example values to launch the Xfce4 display settings would be: