If you select the Ctrl + Shift combination to switch a keyboard layout in Ubuntu or Linux Mint, any other hotkeys with Ctrl + Shift + <Key> may stop working.
This is a known bug in Xorg that can be fixed by applying this patch.
This is a short note about how to fix the Ctrl + Shift + <Key> hotkeys in Ubuntu or Linux Mint by installing the Xorg patch from this PPA.
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Fix Ctrl+Shift+Key in Ubuntu & Linux Mint
Execute these commands to install the Xorg patch from the PPA and fix the Ctrl + Shift + <Key> hotkeys in Ubuntu or Linux Mint:
$ sudo add-apt-repository ppa:nrbrtx/xorg-hotkeys $ sudo apt update $ sudo apt install xserver-common \ xserver-xephyr \ xserver-xorg-core \ xserver-xorg-legacy \ xwayland
Reboot the computer: