Keybinding combination not detecting

Support & Help Requests
1

Ctrl-Alt-Down doesn’t register.

I am using atom as an editor and I noticed one of the keybindings was not working. The keybinding was Ctrl-Alt-Down.

atom has a built-in keybinding resolver so I turned that on to see what was occurring. I noticed that Ctrl-Alt-Down would not register. If I press Ctrl-Alt-Down, only the Ctrl-Alt combination appears. If I press Ctrl-Alt-A, the combination appears correctly. Experimenting further, I noticed any combination of Ctrl-Alt-Arrow key would not work.

I believe this is an OS issue as the Ctrl-Alt-Down combination doesn’t appear to work if I map it to an OS keybinding. To test this, I went into Keyboard Shortcuts and mapped Lock Screen to Ctrl-Alt-Down. Pressing the combination does not activate the lock screen. If I map Lock Screen to Mod4-L, the lock screen will correctly activate.

I’m not entirely sure when this issue started to occur, but I do know that the combination used to work fine.

My question would be, does anyone else have trouble binding the Ctrl-Alt-Down sequence to an OS shortcut (proving this is an issue with the OS)? Is there a way for me to fix this?

I am currently using Ctrl-Shift-Down instead, but it is a lot less convenient of a shortcut.

2

Ctrl-Alt-Arrow keys are normally assigned to desktop switching.

EDIT: You can free them from Control Panel / Hardware / Key bindings (not sure of the name in English)

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3

[quote="gabdub, post:2, topic:13327"]You can free them from Control Panel / Hardware / Key bindings (not sure of the name in English)[/quote]

Screenshot at 2017-05-18 16-21-01.png706×529 82.2 KB

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4

That was it. I had nothing in my Keyboard Shortcuts, but I forgot I had a previous issue with the Marco Window Manager that I had posted about. Ended up requiring a switch to compiz. Anyways, under the CompizConfig Settings Manager I was able to disable the Bindings in the Desktop Wall module.

Thank you for the help in solving this issue.

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