I've got a desktop running Ubuntu GNOME 16.04 with a Steelseries Apex 350 keyboard. How can I make the super key work? Nothing happens when I press it, although it is being detected
2 Answers
I had a similar issue, the super
was disabled by default. A solution can be found here: http://www.dell.com/support/article/de/de/debsdt1/how12108/anleitung-zum-aktivieren-der-ubuntu-super-taste-auf-dell-oem-ubuntu-installationen?lang=de
If it is disabled, find official release notes how to revert this change.
In case this is not intentionally disabled feature then just install:
sudo apt-get install compizconfig-settings-manager
and look up the Ubuntu Unity plugin
usage.

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I had a similar problem with my Apex Pro. For me, it turned out that keyboard switches some kind of mode when I press the SteelSeries function key and then the left Windows key. Doing so toggles the Windows key's color between red and blue, and if I leave it on blue, it no longer registers as Super
. I have no idea what the purpose of the other "mode" is and the manual doesn't mention it.

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xev
will provide the keycode of the key you are pushing. This will be helpful to know if you wish to remap it or use it to activate a specific function. Please [edit] the output ofxev
when you push the button into your question. – Elder Geek Sep 10 '16 at 21:48