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276

Open the System Settings application either by going to Session Indicator in Unity panel, or by searching for System Settings using the HUD. Then go to Keyboard > Shortcuts > Launchers. You can redefine the HUD key with the Key to show the HUD option. Pressing Backspace will disable the HUD shortcut altogether. If you set it to Alt manually, the ...


61

Note: As of Ubuntu 12.10, Unity 2D is no longer developed and all systems use Unity 3D (with LLVMpipe for systems without hardware acceleration). The easiest way I have found is to look at the launcher: Subtlety in the design of the of the launcher popups - Unity 3D lives up to its name with a darker shadow "3D" effect whereas Unity 2D is lighter and ...


59

The list of sessions is described in the directory /usr/share/xsessions. Some of the more common session names are as follows: For unity-2d the session file is called ubuntu-2d.desktop For gnome-classic the session file is called gnome-classic.desktop For gnome-classic (no effects) aka gnome-fallback the session file is called gnome-fallback.desktop For ...


52

Just found out how to tell which session you are using, via command. Way to know which session is being used (lightdm only, so 11.10 or above): tail -n 20 /var/log/lightdm/lightdm.log | grep "Starting session" | cut -d ' ' -f5 Otherwise: echo $DESKTOP_SESSION Hope that helps!


50

Globally in /usr/share/applications, locally in ~/.local/share/applications. If you want to add a custom launcher, create it in ~/.local/share/applications, make it executable, drag and drop it on the launcher*, and finally pin it (right-click on the launcher item → Keep In Launcher). *) Opening it using Nautilus doesn't seem to do the trick.


38

Just look at the desktop session variable: echo $DESKTOP_SESSION It is "ubuntu-2d" for Unity 2D and "ubuntu" for Unity.


37

Subtlety in the design of the of the launcher popups - Unity 3D lives up to its name with a darker shadow "3D" effect whereas Unity 2D is lighter and has a "2D" flat effect. Unity 3D Unity 2D


32

You can use compizconfig-settings-manager to change the key used to show the HUD. To install it, run the following command in a terminal: sudo apt-get install compizconfig-settings-manager What are some of the issues with ccsm and why should I not use it? After installing it, open it and go to Ubuntu Unity Plugin. Click on the button for the ...


31

For 11.10, 12.04, & 12.10 Users of 11.10 and above have Unity 2D installed by default already. To use it, logout, you will be confronted by the LightDM manager. Then, click the little cog wheel, and select Ubuntu 2D. Then, enter your password, hit Enter and you'll be logged into Unity 2D. For 13.04, no need to do this - they have integrated the ...


30

Unity 2D was conceived as a fallback mode for computers without the graphics hardware or drivers to run Unity properly. The project uses, as you say, a separate codebase, and has sucked up substantial engineering resources to stay consistent with the main interface. Luckily, engineers at the Fedora project have successfully developed and integrated a ...


28

It's not a problem of where they are located. It is a matter of how 11.10 and GNOME 3 have changed. For some reason (I don't know why) the GNOME developers have removed appearance properties from the system settings, under the impression that users should not have the power to choose their own theme. The Ubuntu developers where kind enough to patch the ...


26

11.10 & above Unity-3D and Unity-2D are visually very similar. Unity 3D Unity 2D However, the underlying technology used to configure are very different. Unity 3D uses a compiz plugin and you can use ccsm to configure. Unity-2D configuration options are unfortunately not as advanced and involves tweaking a limited number of options in tools ...


25

For 10.10 For people running 10.10 you can add the Unity 2D PPA. Go to Applications -> Ubuntu Software Center -> Edit (Menu) -> Software Sources -> Other Software (tab) -> Add and then paste ppa:unity-2d-team/unity-2d-daily and then install unity-2d from the software center. This will install all of the necessary dependencies to run Unity 2D, including a ...


21

For 11.04 Users of 11.04 can install unity-2d from the archive. This will install all of the necessary dependencies to run Unity 2D, including a "Unity 2D" session that you'll need to login with. Then log out and when logging back in select "Unity 2D" at the bottom of the login screen. Command Line Instructions sudo apt-get install unity-2d


19

A light interface is basically one that uses little resources, and can optionally depend on compositing and/or 3D capabilities, so even compiz could be called a light desktop interface when configured correctly (I've run compiz on worse specs than those you mentioned and it was fast and pretty stable). For optimum performance, I would suggest going with ...


18

For 12.04 Unity 2D supports quite a few options already. Having said that tweaking is (sadly) still a power user process. Here is a list of things you can do: A) Change launcher colour, backlit mode and hiding mode B) Rearrange the icons in the launcher and the indicators order at the panel C) Enable opengl D) More The first thing you need to to is ...


18

Type into terminal: unity --version Hopefully that's exactly what you want. Alternatively, click on the Applications tab in the Unity Launcher and search "Synaptic". You should see "Synaptic Package Manager", open it, and then search "Unity" in the search bar (or Quick Filter, as it's called). Your version should be listed underneath the "Installed ...


18

It is strange that LightDM (Ubuntu 11.10's display manager, which provides the graphical login screen) is not remembering your selection across reboots. You can manually edit the relevant configuration file, which is called .dmrc and is located in your home folder. In Nautilus (the file browser), you'll have to press Ctrl+H (or View > Show Hidden Files) to ...


17

13.04 and later Themes can be changed through the excellent Unity customisation tool called unity-tweak-tool 11.04/11.10/12.04 (click to install) Themes can now be changed through the excellent Unity customisation tool called MyUnity. The key advantage over using Gnome-Tweak is that it does not install all the gnome-shell dependencies. Changing ...


15

Compiz as default Unity 2D compositor Go to a Terminal and enter: sudoedit /usr/share/gnome-session/sessions/ubuntu-2d.session In the fifth line, change metacity to compiz: DefaultProvider-windowmanager=compiz Remove window decoration from maximized windows To solve the window decorator issue, simply run the following in the terminal or Alt+F2 and the ...


15

With Unity-2D, this is controlled using the /apps/metacity/general/mouse_button_modifier GConf key. To disable Alt+Click dragging, run gconftool-2 --set /apps/metacity/general/mouse_button_modifier --type string disabled To re-enable it, run gconftool-2 --set /apps/metacity/general/mouse_button_modifier --type string '<Alt>' Note that this GConf ...


14

Open Terminal and ps -ef | grep compiz | grep $USER | grep -v grep If you get anything, you are currently using Unity 3D. (@Robert says to run ps x | grep [c]ompiz | grep $USER, which ends up [after my edit] with the same output, but I don't know the difference between the flags.)


13

Technical differences. Unity Written in C++ as a compiz plugin and uses nux for OpenGL support. Requires hardware acceleration (Compositing). (Hardware requirements) Is shipped as the default environment in 11.04 Also does window management via compiz itself. Unity 2D Written in C++ with Qt Works on systems without hardware acceleration, like ...


12

Update: Unity 2D now has workspaces, see this Omg!Ubuntu! post for more info. You can set them as described in this answer. From the Unity 2D announcement blog post: In it’s current state, many of Unity’s features from Maverick have already been implemented (dash, places, launcher, panel) and others (uTouch, workspace switcher, accordion effect, ...


12

Just to add - In unity-2d you can move icons up or down directly in the launcher - just l.click on & hold the click for about a sec. The icon will move slightly & then can be re-positioned In unity-2d you can only move up or down inside the launcher unlike unity-3d where you can pull the icon out of the launcher


12

I wasn't satisfied with the answers so I compared the 11.10 Unity-2D source with earlier versions. It can be done. Here's how to do it: (for 11.04/11.10) gksudo gedit /usr/share/unity-2d/launcher/Launcher.qml (for 12.04) gksudo gedit /usr/share/unity-2d/shell/launcher/Launcher.qml Scroll down until you find the following section: ...


12

Unity 2D is not available in Ubuntu 14.04, thus you can't switch. The packages for unity-2d in 14.04 are just transitional dummy packages. They don't contain any files but depend on Unity 3D.


11

Reinstall unity-lens-applications and unity-lens-files logged out and back in and it should work.


11

What you have do is copy radiance as backup and change setting.ini file in themes by using. gksu gedit /usr/share/themes/Radiance/gtk-3/settings.ini Edit: nselected_bg_color:#f07746 So it says: nselected_bg_color:#7FADFD And do the same with gtk-2, using: gksu gedit /usr/share/themes/Radiance/gtk-2/gtkrc Otherwise gtk-2 applications like chrome ...


11

Well it's Called HUD. The new feature of Unity. To stop it from appearing you can disable it's key binding in keyboard shortcuts. Open system settings by going to Session Indicator in Unity panel. In system settings select Keyaboard. Under Shortcuts tab, Click on `Key to show the HUD. and press Backspace to disable it. That's it!



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