keycodes
showkey keycodes in linux lingoxev keycodes in x lingo
manjaro @ lenovo t430
page up 112
page down 117
home 110
end 115
remapping
xmodmap -e 'keycode 112=Home'
xmodmap -e 'keycode 117=End'
xmodmap -e 'keycode 110=Page_Up'
xmodmap -e 'keycode 115=Page_Down'