there is solution Add this repository to sources.list.d deb http://ppa.launchpad.net/nrbrtx/xorg-hotkeys/ubuntu focal main
I wrote this comment to Linux Mint forum too -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/855326 Title: Ctrl-Shift-PageDn shortcut does not work To manage notifications about this bug go to: https://bugs.launchpad.net/gtranslator/+bug/855326/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs