The Screen shot plugin enabled from Compiz Config Settings Manager doesn't work properly. The screen shots of the selected areas get overshadowed with blue color..
Not as clear of a screen shot as I would get in previous Ubuntu versions.
This is a known bug in Compiz: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/771875
I'm sorry you are getting this problem, but as tshirtman points out, it is a known bug. What you should probably do is install shutter or lookit and use them for taking screenshots.
In both applications you can even use the same (or at least a similar) shortcut.
P.S. I will add further instructions later.
Alternatively you can use the
Shortcuts are Print for the whole screen and Alt+Print for the active window.
You can select an area to capture directly with the command
In Ubuntu 12.04 Precise the
Unity is the reason for me. When I disable Unity Panel or when I switch to Ubuntu Classic, the screenshot by +Button1 works superb.
The Ubuntu Unity Plugin is a real problem that serves to make a blue overlay on screen shots. It has some kind of conflict with Screenshot feature.
Also I feel that Avant Window Navigator (AWN) is real good replacement for Unity. Now I can take screenshots with Inbuilt compiz feature.
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