Linux – Ctrl+Alt+Shift shortcuts not working on Linux Mint 19

keyboard shortcutslinux-mintmate

I migrated from Mint 17.3 MATE to Mint 19 MATE and my Ctrl+Alt+Shift keyboard shortcuts stopped working.

If I try to enter a Ctrl+Alt+Shift shortcut in mate-keybinding-properties, the Alt doesn't register

For example: If I press Ctrl+Alt+Shift+X, it registers as Ctrl+Shift+X.

Is there a way to fix it?

Best Answer

This is an Xorg bug and as I understand it manifests itself by Xorg giving preference to shorter shortcuts before more complex ones that include the same keys as a subset.

There is a patch in the Freedesktop bugzilla ticket and you can install it using the commands below (documented already in this Cinnamon issue on Github):

sudo add-apt-repository ppa:nrbrtx/xorg-hotkeys
sudo apt update
sudo apt dist-upgrade
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