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Since today morning my 16.04 ubuntu systems behaves strange. When switching through the open tabs with Alt+Tab the switching works, but the tabs are immediately closed after switching.

In my Window-Management of the ccsm I did not change anything and I cannot find the reason.

The other thing is that I have now an English keyboard layout although it was always German. With sudo dpkg-reconfigure keyboard-configuration I can fix it temporarily, but after a restart it is again English. Cannot imagine that both problems are related, but this are somehow the new functions or nonfunctions of my system...

lsb_release -a gives this output:

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 16.04.1 LTS
Release:    16.04
Codename:   xenial
edwinksl
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I'm experiencing the same problem, with a slight difference that I have allocated Super + Tab to switching applications.

Here's one remedy : use another window switcher.

So anyhow on to how to change the alt-tab application switcher in ubuntu unity.

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

Open compizconfig-settings-manager with alt-F2, type ccsm.

Scroll down to "Ubuntu Unity Plugin". Choose the tab "Switcher". Disable the alt-tab and shift-alt-tab key bindings. ("Key to start the switcher" and "Key to switch to the previous window in the Switcher". Click the "Back" button.

Scroll down to the "Window management" section. Here you can select another switcher. I enable the "Static Application Switcher", resolve any potential conflicts by setting the setting for "Static Application Switcher". Now you can tweak the switcher by clicking on it. I have changed alt-tab and shift-alt-tab to "Next window (All windows)" and "Prev window (All windows)".

(Quoted from https://ubuntuforums.org/showthread.php?t=2211863 ).

So far this is working for me. I haven't experienced the problem since I switched to the other window switcher (that actually implies that the original Unity window manager is causing the problem, and not conflicting keybindings).

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