This been happening to me once every few days or so, for the last several months. It's rather bizarre.

Sometimes the Alt+Tab window switcher gets weird and it no longer switches windows on the first Alt+Tab. It just highlights the current window, and I need to press Alt+Tab+Tab instead to actually switch the window.

It always returns itself to normal behaviour after 5~30 minutes.

My current setup:

  • Ubuntu 18.04.2 LTS
  • Settings > Devices > Keyboard > Switch Windows > Alt + Tab
  • Not sure if relevant, but I usually have a Notepadqq window open.

Why is this happening, and how do I make it stop?

1 Answer 1


Workaround: Whenever Ubuntu gets into that weird state, Alt + Shift + Tab seems to get it back into normal behaviour right away.

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