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I've managed to get the keyboard bindings super-a and super-f broken...

They now respond as if I long-press super without a or f (open the launcher). I don't know how to restore the default working where it opens the applications dash or files/folders dash.

I've tried to run "unity --reset" but that didn't make any difference accept that also ctrl-alt-t (terminal) also doesn't work anymore.

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Open Ubuntu Software Center and install Compiz. Open Compiz (alt + F2 and type ccsm). Go to Unity and check the shortcuts.

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Compiz should be installed already. You just need ccsm. – wojox May 4 '11 at 1:00
compiz and compizconfig-settings-manager were already installed... Opening the settings manager didn't help, even resetting my profile to default (within ccsm) doesn't help. The combination alt-f2 also doesn't work btw... – Melvyn de Kort May 4 '11 at 8:44
up vote 1 down vote accepted

I've solved the problem myself by booting to single user, remove and purge unity, unity-place-applications and unity-place-files and afterwards reinstall them. Now everything is back in order.

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