Why doesn't the PrintScreen dialog show up in Gnome?

Assuming that I have read this bug-report correctly...

This is by design. No really!

Comments #37 onwards talk about this.

The current unity patches state:

on Unity sessions display a confirmation dialog after taking screenshots with the keybindings, the auto saving behaviour is confusing our users

The thread carries on:

but your fix doesn’t help when I don’t use Unity. Why did you think this only applies to Unity users?

With the reply:

because we keep being asked by GNOME upstream and GNOME user to let their desktop alone and ship it as designed so that's what we try to do, we stick to upstream behaviour for GNOME environments and take design decision for Unity

So there you have it. The Gnome-Developers are insistent that their desktop environment should behave this way. Its an upstream issue. The Canonical Developers are respecting this decision and hence the "divergence" - Unity users have the Save as dialog whilst gnome-shell users have the by-design no dialog functionality.

Thus if you are using gnome-shell/gnome-classic, all the screenshots are saved in your home pictures folder ~/Pictures

Note: You can override the screenshot location with gsettings (command-line) or dconf-editor (GUI):

  • set the org.gnome.gnome-screenshot auto-save-directory to file:///home/yourusername/wherever/you/want

I'm late to the party, but I just tripped over this and want to offer a slightly different answer.

Basically, in the latest Gnome 3 / Gnome Shell then they are no-longer using Gnome Screenshot. That means any changes to Gnome-Screenshot's default settings (like default save location) won't affect anything.

Instead, you need to go to your Keyboard settings, disable the "Save a screenshot […] to Pictures" shortcuts and add your own custom shortcuts that call gnome-screenshot with no args (auto-save to its gsettings-defined location), -a (save area), -w (save current window) or -i (if you want the options dialog back). You can obviously mix-and-match some settings, or add more from man gnome-screenshot.


try using Shutter instead, its the best screen capture tool (as it site says :)

sudo add-apt-repository ppa:shutter/ppa    
sudo apt-get update && sudo apt-get install shutter

app site: http://shutter-project.org/

To configure Shutter as the default tool to take screenshots with when you press PrtSc or Alt+PrtSc, here’s what you need to do:

gnome:

1 Go to Edit ▸ Preferences in Shutter
2 In the Keyboard tab, enable both the “Capture” and “Capture with selection” checkboxes:
3 That’s it! Now the usual PrtSc and Alt+PrtSc keybindings will use Shutter to take the screenshots.