Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/ibus/keymaps/modifiers

 keycode 29 = Control_L
keycode 42 = Shift_L
keycode 54 = Shift_R
keycode 56 = Alt_L
keycode 97 = Control_R
keycode 100 = Alt_R
keycode 125 = Super_L
keycode 126 = Super_R
keycode 127 = Menu