Ubuntu – keyboard shortcut to switch between windows within an application

This was my problem too. Alt+<key above tab> didn't work to switch windows in the current application.

In addition, when i pressed and held down the super key to see the unity shortcuts, normally one would see this:

I'm assuming that is for a US keyboard? I stole the screenshot from another post, and on my danish keyboard it now shows Alt + Onehalf.

But when I had this problem, I did not see the line pointed to by the red arrow!!!

So check if you see a keyboard shortcut for "Switch windows of current application". If you don't this is for you:

The fix was as hinted at above to change the XKBMODEL setting in /etc/default/keyboard where I changed from XKBMODEL="microsoft4000" to XKBMODEL="pc105".

I did that and ran sudo dpkg-reconfigure keyboard-configuration. Not sure this last step was required.

Then I needed to reboot.

Now it works.

As @jrg mentioned, this is still possible as Unity (Unity 3D, not the low-power 2D version) is largely built using Compiz.

You'll need to install the Compiz Config Settings Manager Yourself though. Precise steps are:-

1. Install CompizConfig Settings Manager using apt-get install compizconfig-settings-manager compiz-plugins-extra.
2. Run it (just type Compiz in the dash and you'll see it).
3. Click Window Management.
4. Enable the Put plug-in (select the check-box).
5. Click on Put.
6. Configure the shortcut for Put to next Output (click the pencil icon next to the keyboard shortcut for Put to next Output.
7. Logout and login again for the changes to take effect (from the comments!)