unexpected "show desktop" shortcut (KDE4)

[ianseeks]

On Saturday, 6 August 2016 10:24:13 BST René J.V. Bertin wrote:
> Hi,
> 
> I hit an accidental and as yet unidentified shortcut and am now seeing a
> "Show Desktop" entry in the task switcher. I'm 95% sure I deactivated the
> "Show Desktop Icon" option in the task switcher settings. Is there a
> shortcut to activate this option?
> 
> To give an idea what keys I may have hit: I triggered this by a borked
> attempt to use the hardware shortcut Fn-F2 (turns off backlighting); the Fn
> key sits between the Ctrl and "Windows" keys.
> 
> Thanks,
> René

Have you tried adding he "Show Desktop" widget to your taskbar as a permanent 
option? You can then right click the icon and choose your own shortcut keys

-- 
Qt: 5.6.1
KDE Frameworks: 5.24.0
kf5-config: 1.0
KDE Plasma: 5.7.3
Kernel: 4.7.0-1-default
"openSUSE Tumbleweed (20160730) (x86_64)"