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Pressing and holding Alt + scrolling with the mouse wheel used to give me a transparent window, is there any way I can get that or something similar in Ubuntu 12.04?

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up vote 25 down vote accepted

Install these pacakges with this commands

sudo apt-get install compizconfig-settings-manager compiz-plugins-extra

This will install the CompizConfig-Settings-Manager, you can find this by searching as CCSM in the dash.

Open the CompizConfig-Settings-Manager by typing ccsm in the dash. In the CCSM's window, under the Accessibility section, enable the Opacity, Brightness and Satuaration by placing a tick mark on the corresponding checkbox.

CCSM

This should automatically enable the plugin, if it is not, press Alt+F2 and type compiz --replace.

Now you can increase or decrease the transparency of any window by holding the Alt key and scrolling mouse wheel.

Note:
If Unity seems crashed, don't be bothered. Press Ctrl+Alt+Del to bring logout window, and press Enter to logout from your session. Then login again.

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@Eccentric_Geek A little nice tutorial, on how to do it per app: cupugila.blogspot.de/2012/08/make-ubuntu-unity-window-look.html – Radu Maris Feb 18 '13 at 11:53
    
@Anwar Shah, immediately after I press Alt+F2 and type compiz --replace(otherwise the opacity doesn't work) the x(close) ,minimize and resize from top-right of all the open windows disappear and I can't resize any more any windows even with pulling the margins with the mouse, and the alt key doesn't work any more in any windows. – XPDIN Apr 24 at 11:08
1  
@XPDIN which version of Ubuntu are you using? There should be a unity --reset command in newer versions of Ubuntu. I'm on 14.04 – Anwar Shah Apr 24 at 14:52
    
@Anwar Shah For the moment I am using Lubuntu 15.10, tell me please, what should I do? I am Linux beginner user. – XPDIN Apr 24 at 19:07
1  
Can you log out and login again. If not, use ctrl-alt-del key combo. If you still having problem, install compizconfig-settings-manager and in the advanced tab, select unity problem and click reset button. – Anwar Shah Apr 24 at 19:30

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