Ubuntu

desktop background converts to grey scale (xfce)

Asked by JoFe

In Ubuntu 12.04 (xfce) I have changed the background picture and played with the brightness settings.
Suddenly the background picture changed to greyscale...
Yesterday I moved to Ubuntu 13.04 and it is still the same. When I load a new background picture it first appears shortly in full color mode but then, when it rescales (to screen resolution?) it is in grey again. But all the buttons are colored. Just the background picture is gray. And in the login screen the background picture also appears, but in color mode.

So it seems like a setting was done somewhere which you cannot change through the desktop appeareance menu. But I don#t know where...

Thanks for your support!

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actionparsnip (andrew-woodhead666) said : 		#1

How did you 'move' to 13.04? What steps did you take? Clean install or did you upgrade online all the way up to Raring?

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JoFe (johannes-feder) said : 		#2

... I upgraded directly online. But as the problem araised already before and did not change I guess it is some settign which was taken over/not overwritten by the online update.

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JoFe (johannes-feder) said : 		#4

I did some further analysis now and found following file which could help - especially the setting of color-style=0:

... /.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-desktop.xml:

<?xml version="1.0" encoding="UTF-8"?>

<channel name="xfce4-desktop" version="1.0">
  <property name="desktop-icons" type="empty">
    <property name="style" type="int" value="2"/>
    <property name="file-icons" type="empty">
      <property name="show-home" type="bool" value="false"/>
      <property name="show-filesystem" type="bool" value="false"/>
      <property name="show-removable" type="empty"/>
      <property name="show-trash" type="bool" value="false"/>
    </property>
    <property name="icon-size" type="uint" value="32"/>
    <property name="use-custom-font-size" type="bool" value="true"/>
    <property name="font-size" type="double" value="8.000000"/>
  </property>
  <property name="backdrop" type="empty">
    <property name="screen0" type="empty">
      <property name="monitor0" type="empty">
        <property name="image-path" type="string" value="/home/johannes/Bilder/USA_Southcoast_11_2013_4.png"/>
        <property name="image-show" type="bool" value="true"/>
        <property name="last-image" type="string" value="/home/johannes/Bilder/USA_Southcoast_11_2013_4.png"/>
        <property name="last-single-image" type="string" value="/home/johannes/Bilder/USA_Southcoast_11_2013_4.png"/>
        <property name="brightness" type="int" value="0"/>
        <property name="saturation" type="double" value="0.000000"/>
        <property name="color-style" type="int" value="0"/>
        <property name="image-style" type="int" value="0"/>
        <property name="last-image-list" type="string" value="/home/johannes/.config/xfce4/desktop/backdrop.list"/>
      </property>
      <property name="monitor1" type="empty">
        <property name="image-path" type="empty"/>
        <property name="image-show" type="empty"/>
      </property>
    </property>
  </property>
</channel>

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JoFe (johannes-feder) said : 		#5

... I posted this topic now in the XFCE forum directly. I will keep you informed when I get a glue :-)

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JoFe (johannes-feder) said : 		#6

I got the solution in the XFCE forum. It was much easier than I thought... :D

... when I moved the sliders I was focused on the middle slider position. And this is unfortunately not the "default".
So now I moved the slider just a little to the right and everything works well

---> in XFCE desktop settings manager, the default value for Saturation is not in the middle position of the slider, it is 1.0 <---