Lanx
<Prior Amod>
did you try a different keyboard? looks like gum on fn keyFunction key stuck:
Tried --
* uninstalling keyboard/ restarting computer
* pressing shift three times fast, five
* holding shift five seconds
* ctrl+ctrl
* ctrl+alt
* ctrl+shift
* shift+shift
* ctrl+alt+del
* Unplugging/replugging keyboard
* turning off computer
* restarting computer
* clicking various things in accessibility
* osk
...