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I'm using Manjaro Linux, with KDE Plasma as desktop environment, ran by a Raspberry Pi 4B 4GB.

In applications that have tabs, I can navigate through the tabs using alt + tab number. All combinations work, except for alt + 4 (I'm using the numbers that are located at the top of the letters, not the numpad).

So, for example, when I'm on Firefox or Visual Studio Code, and I have 5 tabs open, I can quickly change to any specific tab, except for the 4th one. The alt + 1 combination works, the alt + 5 combination works, but when I press alt + 4 nothing happens, so the 4th tab must be accessed in other ways (oh the horror!).

Is that specific key combination being used by the operating system? How can I change this behavior, so that alt + 4 correctly switches to the 4th tab of the current focused application?

NPN328
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1 Answers1

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I suspect you've got a global shortcut assigned to Alt + 4.

Please check https://docs-staging.kde.org/trunk5/en/khotkeys/kcontrol/khotkeys/shortcuts.html

Artem S. Tashkinov
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  • Thank you so much for your answer! I searched all the `alt` related shortcuts, and there's nothing assigned to `alt + 4`. I don't have a "global shortcuts" section in the settings, but I searched in "Applications", "System Services", and "Common Actions" sections inside the shortcuts settings, and there doesn't seem to be anything assigned to `alt + 4`. – NPN328 Dec 30 '21 at 15:35
  • Maybe this application itself has shortcuts? Can you check that please? – Artem S. Tashkinov Dec 30 '21 at 15:41
  • No, that doesn't seem to be the case either. It happens in Chrome, in Firefox, in Visual Studio Code, everywhere. – NPN328 Dec 31 '21 at 10:25
  • It does seem to be assigned to something, but I can't find to what or how. If I press alt + 4 while I write this comment, while the text box is focused, the sides of the text box change color for a split second, from blue to white!!! This seems to be how the OS is configured for Raspberri PI? I had the same problem in a different install, different raspberri. So weird! – NPN328 Dec 31 '21 at 10:36
  • Please try this https://unix.stackexchange.com/questions/261371/how-do-i-find-out-what-program-owns-a-hotkey If you find out what it is, please share it with us. Perhaps this issue affects others as well. – Artem S. Tashkinov Dec 31 '21 at 10:58