I have Xubuntu 14.04.1 with xfdesktop 4.11.6 When I go to change the wallpaper, the area for the thumbnails is blank, except for a little blue square. When I manipulate the zoom/centre/tile etc things change- but I can't actually change the wallpaper. I have a taken a screenshot I'm using Kernel version 3.13.3-031303-generic #201402131842 SMP I've noticed this behaviour for a few weeks, but it was intermittent. It's no longer intermittent. https://bugs.launchpad.net/ubuntu/+source/xfdesktop4/+bug/1347087/+attachment/4160204/+files/Screenshot%20-%20220714%20-%2019%3A16%3A46.png
Ouch. I assume tumblerd is running. Is there any output if you run xfdesktop-settings from the command line?
Marking needinfo as we need some idea of what's going on. You can also try compiling xfdesktop with --enable-debug=yes and running xfdesktop-settings from the command line and see what shows up in the log.
I'm having this too. Running xfdesktop-settings from the command line doesn't show any output, but I have not yet tried compiling from source to turn on --enable-debug. I have the same distro/versions as OP.
I build the 4.11.6 tag from Git and after running, here is the debug output. I changed the directory from the original to another one and then back to the original. DBG[../../settings/main.c:1594] cb_window_opened(): Found our window DBG[../../settings/main.c:1555] cb_workspace_changed(): active_workspace now 0 DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/image-style DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/color-style DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/color1 DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/color2 DBG[../../settings/main.c:803] xfdesktop_settings_generate_old_binding_string(): name /backdrop/screen0/monitor0/color1 DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/backdrop-cycle-enable DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/backdrop-cycle-period DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/backdrop-cycle-timer DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/backdrop-cycle-random-order DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/last-image DBG[../../settings/main.c:1234] xfdesktop_settings_update_iconview_folder(): current_folder /usr/share/xfce4/backdrops/xubuntu-raring.png, dirname /usr/share/xfce4/backdrops DBG[../../settings/main.c:1555] cb_workspace_changed(): active_workspace now 0 DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/last-image DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/last-image DBG[../../common/xfdesktop-thumbnailer.c:391] xfdesktop_thumbnailer_dequeue_thumbnail(): Dequeue of thumbnailer->priv->handle: 186 failed DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/last-image DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/last-image DBG[../../settings/main.c:789] xfdesktop_settings_generate_per_workspace_binding_string(): name /backdrop/screen0/monitorDVI-I-1/workspace0/last-image DBG[../../common/xfdesktop-thumbnailer.c:391] xfdesktop_thumbnailer_dequeue_thumbnail(): Dequeue of thumbnailer->priv->handle: 188 failed
Created attachment 5697 Include dir needed for building "out of tree".
(In reply to Matthew Brush from comment #5) > Created attachment 5697 > Include dir needed for building "out of tree". I needed this to build the way I normally do (not in srcdir).
Same result using 4.11.8git-075f69f. I also tried to use -R to reload xfdesktop with no effect. I can change the settings OK through the Settings Editor GUI.
Created attachment 5784 Don't dequeue request when new image is queued First, I applied your patch to git master, thanks! Second, can you see if this patch helps?
Bumping the people on this report: if you can experience the bug, please try the patch before 4.12 to spare your fellow users some trouble :-)
This may be the same issue as https://bugzilla.xfce.org/show_bug.cgi?id=11892 which means it may now work in git master.
No activity on this bug for a long time, and I can't reproduce on xfdesktop 4.12.3, closing. Feel free to reopen if someone experiences this bug again.