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    Desktop Effects - Window "image" not working

    Hi,
    the desktop effect for the window image doesn't seem to be working for me. For example, when I hover over the window in the task bar, it displays a blank image. The 'window' is still there, but it's always just a blank window. The same thing happens for the 'present windows' effect. They all move to the correct location, and the icon/name are present, but there is no image of the windows themselves.
    Thanks.
    Registered Linux user #346571

    #2
    Re: Desktop Effects - Window "image" not working

    What Desktop Theme are you using?
    What make/model video card do you have?
    Using Kubuntu Linux since March 23, 2007
    "It is a capital mistake to theorize before one has data." - Sherlock Holmes

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      #3
      Re: Desktop Effects - Window "image" not working

      Running Maverick with the default theme. Computer is a Dell Inspiron 1564. Card is an integrated 512 (MB) Intel® X4500HD Graphics Media Accelerator


      Registered Linux user #346571

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        #4
        Re: Desktop Effects - Window "image" not working

        Try enabling (checking) the Disable functionality checks on the Advanced tab of K > System Settings > Desktop Effects. Some Intel GPUs are problematic. For mine, if I don't enable the Disable functionality checks then the Translucency effect doesn't work.
        Using Kubuntu Linux since March 23, 2007
        "It is a capital mistake to theorize before one has data." - Sherlock Holmes

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          #5
          Re: Desktop Effects - Window "image" not working

          Will do! Thanks for the tip. Kubuntu 10.10 is just about the most perfectly working Linux I've ever installed. A few 'smallish' issues such as these are my only worry.

          Ahhhh, long gone are the days of custom tuning X and manually installing wifi drivers. lol! :P
          Registered Linux user #346571

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            #6
            Re: Desktop Effects - Window "image" not working

            okay... that didn't work. Leaving it as "OpenGL", I tried fiddling with a bunch of options and none of them worked. Present Windows and Task Preview still show empty windows. However, when I switch to XRender, the Taskbar Preview works but Present Windows isn't even an option to enable (and therefore, I'm unsure if it's working or not). Other things that don't work under XRender are Cube and Wobbly Windows.

            I guess worst case is, I'd rather have OpenGL without the previews.

            Any other ideas?
            Registered Linux user #346571

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              #7
              Re: Desktop Effects - Window "image" not working

              its possibly an issue w/ your video card driver, if previews are really important to you , you might want to try the xcrack ppa. (newest xorg / drivers ) but only do that if your not afraid to have to fix X just incase.
              Mark Your Solved Issues [SOLVED]
              (top of thread: thread tools)

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                #8
                Re: Desktop Effects - Window "image" not working

                So... A little more on this. I actually *can* see thumbnails of the windows once in a great while. Usually, I see only an empty screen. For Present Windows, I seem them for a split second and then they go empty. For taskbar preview, I see them every once in a while. Here's the thing.... In both case, when I don't see them, everything works fine. However, my computer completely freezes up when I do see them.

                Short term solution? Just don't use it. Is there a way to see any error messages when it does work but freezes? I checked the standard locations (dmesg, /var/log), but no luck....
                Registered Linux user #346571

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                  #9
                  Re: Desktop Effects - Window "image" not working

                  Exact same problem here on a Dell Latitude E4300 with an Intel i915 card. Does anyone have any idea?

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                    #10
                    Re: Desktop Effects - Window "image" not working

                    I never found a solution, but I know that a bug report has been submitted.
                    Registered Linux user #346571

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                      #11
                      Re: Desktop Effects - Window "image" not working

                      Originally posted by jeremy1701
                      I never found a solution, but I know that a bug report has been submitted.
                      Do you have the link to it? I'd love to follow it.

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                        #12
                        Re: Desktop Effects - Window "image" not working

                        https://bugs.launchpad.net/ubuntu/+s...ce/+bug/671295
                        Registered Linux user #346571

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