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I use Fedora and KDE Plasma 5.

I want to close applications with ALT+Q. I set this hotkey as KWin->Close Window, but after saving changes ALT+Q still does nothing. Some applications close with Ctrl+Q, some (ex Google Chrome) close with ALT+F4, but ALT+Q doesn't work. I can not understand why.

  • I edited my answer to include the fact that Alt+Q works in Fedora 30's KDE spin as well. – DK Bose May 28 at 5:58
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Closing a window and closing an application aren't always the same thing.

I use Kubuntu 19.04, not Fedora, but I can use Alt+Q to close windows.

Setting Alt+Q to close windows

That setting is reflected in ~/.config/kglobalshortcutsrc

Window Close=Alt+F4\tAlt+Q,Alt+F4,Close Window

And Alt+Q works to close windows of Firefox, KInfoCenter, Konsole, Kwrite, and System Settings.

Operating System: Kubuntu 19.04
KDE Plasma Version: 5.15.5
KDE Frameworks Version: 5.57.0
Qt Version: 5.12.2

Is it possible you haven't installed KDE Plasma 5 completely?


Edit:

I installed the KDE spin of Fedora from here in a VM to check whether Alt+Q works there to close windows. And it does.

Operating System: Fedora 30
KDE Plasma Version: 5.15.4
KDE Frameworks Version: 5.58.0
Qt Version: 5.12.1
Kernel Version: 5.0.17-300.fc30.x86_64
OS Type: 64-bit
  • I think that I installed completely KDE Plasma 5. But I noticed that other shortcuts with ALT doesnt work too... I set CTRL + ALT + Q for lock screen and it doesnt work :( – QNester May 27 at 10:39
  • My info: Operating System: Fedora 30 KDE Plasma Version: 5.15.4 KDE Frameworks Version: 5.58.0 Qt Version: 5.12.1 – QNester May 27 at 10:40
  • I don't know anything about Fedora. Could you look around and find out whether there's anything else you could install? Can you set any new shortcuts? And do Alt+F4 and Alt+F3 work? They're pretty basic and built-in, AFAICT. – DK Bose May 27 at 10:43
  • I can set new shortcuts - I set Win + Numkeys for switch between workspaces and it works fine, but something wrong only with Alt hotkeys. Builtin ALT hotkeys (ex Alt+F4) work fine too. CTRL+Q close some apps too. I have feeling that there is conflict between Fedora's ALT and other KDE shortcuts, but I cant find info about that. – QNester May 27 at 10:51
  • Normally, if you enter a shortcut already in use, the system warns you and asks if you want to reassign the shortcut. Sorry I can't be of more help! – DK Bose May 27 at 11:03

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