Unable to make screenshot to clipboard with <Ctrl+PrintScreen>, <Ctrl+Alt+PrintScreen>, <Ctrl+Shift+PrintScreen> keys in Unity session in Trusty

[Norbert]

In Trusty with all installed updates it is not possible to make ScreenShot to clipboard with <Ctrl+PrintScreen>, <Ctrl+Alt+PrintScreen>, <Ctrl+Shift+PrintScreen> keyboard buttons.

Steps to reproduce:
1. Install Ubuntu 14.04.
2. Login to Unity session.
3a. Try to make screenshot of the whole desktop with <Ctrl+PrintScreen>
3b. Try to make screenshot of active window with <Ctrl+Alt+PrintScreen>
3c. Try to make screenshot of selected area with <Ctrl+Shift+PrintScreen>

Expected results:
* Corresponding screenshot is saved in clipboard and may be inserted to other applications with <Ctrl+V>.

Actual results:
* Screenshot is not saved to clipboard.

Notes:
1. This bug is complementary to bug 1282649 (Unable to make screenshot with <PrintScreen> key in Unity session in Trusty).
2. I use default shortcuts <Super+Space> and <Shift+Super+Space> for keyboard layout switching.
3. I did some tests (see my Google Docs table - https://docs.google.com/spreadsheet/ccc?key=0Ao5e713Ig9g_dHpGYVlMZ2JuYXdXdEtmUi1QbGxsYXc&usp=sharing). In Ubuntu 12.04 (with no matter Unity or GNOME sessions) the full working list of shortcuts used for screenshoting is as follows: <PrintScreen>, <Alt+PrintScreen>, <Ctrl+PrintScreen>, <Shift+PrintScreen>, <Ctrl+Alt+PrintScreen>, <Ctrl+Shift+PrintScreen>. All these hotkeys work normally in 14.04 too on GNOME FlashBack session (Compiz and Metacity).

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-settings-daemon 14.04.0+14.04.20140310-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
Uname: Linux 3.13.0-18-generic i686
ApportVersion: 2.13.3-0ubuntu1
Architecture: i386
CurrentDesktop: Unity
Date: Fri Mar 21 13:29:53 2014
InstallationDate: Installed on 2014-03-17 (4 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140316)
SourcePackage: unity-settings-daemon
UpgradeStatus: No upgrade log present (probably fresh install)
upstart.unity-settings-daemon.log: (gnome-terminal:2677): GLib-GIO-CRITICAL **: g_settings_get: the format string may not contain '&' (key 'monospace-font-name' from schema 'org.gnome.desktop.interface'). This call will probably stop working with a future version of glib.

[Sebastien Bacher (seb128)]

Thank you for your bug report. I can't confirm that, using ctrl-printscreen does the screenshot animation and I can paste the image in e.g inkscape

[Norbert (nrbrtx)]

I tested it again on other installation of Ubuntu 14.04 which was updated from Ubuntu 13.10 - <Ctrl+*+PrintScreen> shortcuts work here, but in clean install (this bug report) they do not. Tested on guest session and normal user session (all ~/.* directories removed).

[Norbert (nrbrtx)]

Made a clean install of 14.04 beta2 (4cf9e5ef2c1c362317c90312c76cfda0 *ubuntu-14.04-beta2-desktop-i386.iso) and got all shortcuts for screenshots working on all sessions - Unity, GMOME Compiz, GNOME Metacity.
It's great! Thank you!

[Patrick Maciel (patrickmaciel-info)]

I install Ubuntu 14.04 beta2 today (2014-03-30) and the error persist:

CTRL+PrintScreen and SHIFT+PrintScreen not save or copy image for anywhere