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That's about the summary of my problem. Just updated to 12.04 and Button2 will no longer activate the compiz 'Scale' facility for window switching. There doesn't seem to be any binding conflicts (in compiz config .. assuming this is the right place to set it?).

Does someone have some advice?

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Assuming I read your question correctly, I was able to set middle mouse button to enable Window scale. From what I see, it is no longer part of the default settings but you can easily set it this way using CCSM Install compizconfig-settings-manager.

Once you have installed it, open CCSM and search for Scale.

Open scale

Then go to Bindings tab in Scale and click on Initiate Window Picker (the third option with a mouse icon next to it).

Mouse option

Click on the checkbox next to Enable and choose Button2 in the dropdown list.

Enable middle button

Now that all the settings are set, log out and back in and you would now be able to enable Window scaling using your middle mouse button.

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Thankyou for the detailed suggestion. That was the first thing I tried, it didn't work. So I tried it again .. and it didn't work [repeat ad-nausium]. – Empty Aug 31 '12 at 7:13
@Empty Weird. I have tried twice now and it works. Could you try running unity --replace in a terminal and see if that makes any difference? – jokerdino Aug 31 '12 at 7:16
unity --replace: no process found, gui crashed. – Empty Aug 31 '12 at 7:21
@Empty I think one other setting is probably conflcting. Check Viewport switcher - – jokerdino Aug 31 '12 at 7:21
Why did you run that with root? o.O Does Super-W do what you want to do with Scale-effect? – jokerdino Aug 31 '12 at 7:43

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