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I've been wondering how can I assign to multiple keyboard shortcuts to do the same action? More specifically, I want to be able to change my volume with both my headset buttons and my keyboard.

I'm able to change the volume with just one at the time: with the one I define in the 'Keyboard shortcuts' application. Is there any way?

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You could probably use xmodmap to reassign the buttons on your headset to the same as you use for your keyboard.

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Yes, but now I need to know what is the default action of 'Audio raise/lower volume', from the Keyboard shortcuts application. Because, when I use my own command 'amixer channel set opt', it raises/lowers the MBO sound card, while I'm listening with my headset. – ksemeks Aug 30 '11 at 7:50
@ksemeks : the actions are : amixer set Master 10%+ to raise the volume amixer set Master 10%- to decrease the volume. To get the gauge notification, you could use notify-send, but I am not sure how to set the gauge – danjjl Aug 30 '11 at 9:05
@danjjl: well, that's why I'm trying to find the exact action of the Volume up/down, from Setting->Keyboard->Shortcuts – ksemeks Aug 30 '11 at 9:10

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