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In Ubuntu 20.04 (using Gnome 3), I have the keyboard shortcut for switching desktop workspaces (distinguishing because the software I'm using is also called "Workspace") set to Ctrl+Alt+Up/Down. This works great except for when I connect to a Citrix Workspace VM in fullscreen mode. Citrix Workspace takes all keypresses and processes them in the guest instance. What I would like to do is prevent Citrix Workspace (and any other app if possible) from processing these keychords so I can have Citrix Workspace fullscreen on its own desktop workspace, but still switch between desktop workspaces using my keyboard shortcut. The alternative is to "un-fullscreen" and then switch desktop workspaces, as Citrix Workspace does not steal keyboard focus like this in windowed mode.

Is there any way to force Gnome to process certain keychords without passing them onto child applications? Or alternatively, is there a way within Citrix Workspace to prevent fullscreen mode from stealing focus for global shortcuts as if it were in windowed mode?

codewario
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I don't know if there's a way to force fullscreen Citrix to always ignore certain keyboard shortcuts, but here's a useful workaround:

Within a Citrix fullscreen session, Ctrl+F2 will pass (some? all? not sure) keyboard shortcuts through to the host OS, i.e. Ubuntu, for a short time. I use it for Super+Tab to switch app windows, and I confirmed that it works for Ctrl+Alt+Up/Down.

See Switch to host desktop from citrix session.

David Goodger
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