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I don't know why but

show Desktop Ctrl-Alt-D suddenly stopped working for Firefox only (in all workspaces).

Any ideas what might have caused this?

Thank you all!

ps: alt-space-n or ctrl-alt-arrow_key both continue to function normally (as a quick and effective work-around).

pps: in keyconfig I can't see any addon using this combination; plus, I did not install a new addon recently...

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3 Answers

For me, Super ("Windows") + D works.

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I'm on a Thinkpad (X41); hence, there's no Windows key, and no super key (by default) either. –  nutty about natty May 26 '11 at 19:24
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Isn't it Super+D? To Show Desktop Ctrl+Alt+D is never a Default shortcut in Ubuntu. However if you have changed it just go to 'Keyboard Shortcuts' which you will find under 'Themes and Tweaks'

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Ctrl-Alt-D does work for all applications except for Firefox (this behaviour started 2-3 days ago). –  nutty about natty May 26 '11 at 19:26
    
I assume that adding a 2nd shortcut to "show desktop" would also work for Firefox. But the thing is: I don't want an extra individual shortcut. The two work-arounds cited above (alt-space-n or ctrl-alt-arrow_key) work already. I just don't know why FF is playing up. Could some extension suddenly have usurped that keyboard shortcut combination? But if so, which?!? –  nutty about natty May 26 '11 at 19:29
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up vote 0 down vote accepted

not solved, after all (problem re-appeared).

Thought yesterday's update (of Firefox and the firefox-globalmenu (unity appmenu integration for FF)) had resolved it. The firefox-globalmenu (unity appmenu integration for FF) was the only thing which I changed recently in FF, so I thought that probably was the cause of the malfunction.

So now, in the same session, suddenly (after some switching between workstations) the problem reappeared.

:(

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now it works again (same "session", not even interrupted by a standby). I don't know what changed. –  nutty about natty May 28 '11 at 21:58
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