Comment 4 for bug 1313728

Hi,

I have the same problem

Desktop: Xubuntu 14.04, current updates
Date: Aug 26, 2014 (so this problem has been there for almost 3 months (at least))
Graphics card: Nvidia Quadro FX 580
Monitor DELL 2408WFP (DFP-3), connected via DP

tomsam:~$ xfconf-query -c xfce4-desktop -lv

/backdrop/screen0/monitor0/brightness 0
/backdrop/screen0/monitor0/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitor0/color-style 0
/backdrop/screen0/monitor0/image-path /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitor0/image-show false
/backdrop/screen0/monitor0/image-style 0
/backdrop/screen0/monitor0/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitor0/last-image-list /home/tomsam/.config/xfce4/desktop/backdrop.list
/backdrop/screen0/monitor0/last-single-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitor0/saturation 1,000000
/backdrop/screen0/monitor0/workspace0/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitor0/workspace0/color-style 0
/backdrop/screen0/monitor0/workspace0/image-style 0
/backdrop/screen0/monitor0/workspace0/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitor0/workspace1/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitor0/workspace1/color-style 0
/backdrop/screen0/monitor0/workspace1/image-style 0
/backdrop/screen0/monitor0/workspace1/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitor0/workspace2/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitor0/workspace2/color-style 0
/backdrop/screen0/monitor0/workspace2/image-style 0
/backdrop/screen0/monitor0/workspace2/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitor0/workspace3/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitor0/workspace3/color-style 0
/backdrop/screen0/monitor0/workspace3/image-style 0
/backdrop/screen0/monitor0/workspace3/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-1/workspace0/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-1/workspace0/color-style 0
/backdrop/screen0/monitorDP-1/workspace0/image-style 0
/backdrop/screen0/monitorDP-1/workspace0/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-1/workspace1/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-1/workspace1/color-style 0
/backdrop/screen0/monitorDP-1/workspace1/image-style 0
/backdrop/screen0/monitorDP-1/workspace1/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-1/workspace2/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-1/workspace2/color-style 0
/backdrop/screen0/monitorDP-1/workspace2/image-style 0
/backdrop/screen0/monitorDP-1/workspace2/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-1/workspace3/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-1/workspace3/color-style 0
/backdrop/screen0/monitorDP-1/workspace3/image-style 0
/backdrop/screen0/monitorDP-1/workspace3/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-2/workspace0/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-2/workspace0/color-style 0
/backdrop/screen0/monitorDP-2/workspace0/image-style 0
/backdrop/screen0/monitorDP-2/workspace0/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-2/workspace1/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-2/workspace1/color-style 0
/backdrop/screen0/monitorDP-2/workspace1/image-style 0
/backdrop/screen0/monitorDP-2/workspace1/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-2/workspace2/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-2/workspace2/color-style 0
/backdrop/screen0/monitorDP-2/workspace2/image-style 0
/backdrop/screen0/monitorDP-2/workspace2/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/backdrop/screen0/monitorDP-2/workspace3/color1 <<UNSUPPORTED>>
/backdrop/screen0/monitorDP-2/workspace3/color-style 0
/backdrop/screen0/monitorDP-2/workspace3/image-style 0
/backdrop/screen0/monitorDP-2/workspace3/last-image /home/tomsam/Desktop/sophia/IMG_0192.JPG
/desktop-icons/file-icons/show-filesystem false
/desktop-icons/icon-size 36
/desktop-icons/show-thumbnails false
/desktop-icons/show-tooltips false
/last/window-height 518
/last/window-width 704
/windowlist-menu/show false

> Can you also open xfce4-settings-editor and right click on xfce4-desktop and select the monitor option, then launch xfdesktop-settings and see if notices any changes?

1409048147: /backdrop/screen0/monitorDP-2/workspace0/color1 (GPtrArray_GValue_: [ 32614, 0, 4, 65535 ])
1409048128: start monitoring channel "xfce4-desktop"

after starting xfdesktop-settings the color is set to #7f0000

Request for workaround:
Can someone enlighten me, how to set __this__ background color by script, so that i dont have to change (and remember) my favorite RGB value all the time (in the days of yore, this was done by xsetroot, but apparently this does not work anymore (and xsetroot never made permanent changes)?

Thanks,
tomsam