Left Meta key not working

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http://chakra-project.org – Hi all,I tried to assign a shortcut to open Dolphin : I want to use the same shortcut as for opening the explorer in Windows (Windows/Meta + E).I managed to do that in Chakra on my desktop computer, but on my laptop, in the same version of KDE (4.8.3), it doesn't work : the left meta key isn't recognized. When I press the left meta key in the "trigger" tab of the KDE shortcut module, instead of displaying "Meta", it displays three white squares. I tried with the laptop keyboard and my USB keyboard, it's the same.The right Meta key on my keyboard works fine an (HowTos)