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I am using Ubuntu 16.04 and I have an issue with gnome screenshot (3.18.0). If I take several screenshots without closing previous screenshot instances, I get progressively less bright images. I hope I help you understanding by posting the pictures of an empty libreoffice page. The first screenshot has the right brightness. First screenshot, one gnome screenshot instance active I then paste the third screenshot (meaning that three instances of gnome screenshot are open at the same time), in which the image is visibly darker. Third screenshot, three screenshot instances active. Even worse when the open instances are four. Four instances I do not post more pictures, but the darkening is gradual and apparently continuous, although I never went on to have more than six instances open at the same time. If I close all the instances of gnome screenshot and take a new screenshot, the brightness is back to normality. enter image description here Thus, what I usually do is closing screenshot everytime, which is not a big deal, but I am wondering why is this happening. Any idea?

Fabio Marroni
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gnome-screenshot marks the photographed area by making it slightly darker. That is why your whole screen turns darker after each use without closing the gnome-screenshot window. You can see this effect, if you are screenshotting single non-maximized windows using Alt + Print. The window area will become darker. You can see this more easily when moving other windows around or bringing them to the front.

I do not know of a configuration option to fix this annoyance, so your workaround is the only solution. As an alternative, you can use GIMP for taking screenshots.

Related question: How to get rid of grey area after gnome screenshot being executed.

Kreuvf
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