Comment 5 for bug 774870

I am able to duplicate abi's experience. When I bind workspaces 10, 11 and 12 to shift-F10, shift-F11, shift-F12, as abi has done, shift-F10 works but the other two do not. The same thing happens when I bind the workspaces to F10, F11 and F12 (without modifier); F10 works and the other two do not.

However, I don't think it's a problem with the key combinations. Other applications (including the Keyboard Shortcuts dialog and xev) are reading the keystrokes fine, so the hardware is working and the data is getting through the X input layer.

Next I tried binding the last 3 workspaces out of order, like this:

Workspace 10: Alt-F11
Workspace 11: Alt-F12
Workspace 12: Alt-F10

When I do that, Alt-F11 works, and Alt-F10 and Alt-F12 do nothing. So it seems to be a problem with binding keys to select the 11th and 12th workspaces, rather than any specific problem with the F11 or F12 key.