The CTRL + numkeys were not working for me and here’s the fix, for other linux laptop users -
My keycodes may be different from yours, so use the utility xev to grab the correct key code when numlock is on.
Contents of .Xmodmap -
keycode 79 = KP_7 KP_7 KP_Home KP_7
keycode 80 = KP_8 KP_8 KP_Up KP_8
keycode 81 = KP_9 KP_9 KP_Prior KP_9
keycode 83 = KP_4 KP_4 KP_Left KP_4
keycode 84 = KP_5 KP_5 KP_Begin KP_5
keycode 85 = KP_6 KP_6 KP_Right KP_6
keycode 87 = KP_1 KP_1 KP_End KP_1
keycode 88 = KP_2 KP_2 KP_Down KP_2
keycode 89 = KP_3 KP_3 KP_Next KP_3
keycode 90 = KP_0 KP_0 KP_Insert KP_0Add to an X startup, either in your WM startup or in an .Xsessionrc file
xmodmap “~/.Xmodmap”