I recently got a framework laptop and I have been customizing it, including changing the touchpad swipe gestures and the keyboard layout. I couldn't find an easy guide on how to re-map the right Alt and Ctrl keys to Home and End, so once I figured it out I decided I'd post it here. I also map Caps Lock to Ctrl, so I have included an optional step here to do that as well.
Update 2022-09-23 #
There's now a tool to remap keys in the framework laptop's firmware
Installing on arch-based linux systems:
1yay -S fw-ectool-git
To remap the keys
1sudo ectool raw 0x3E0C d1,d1,b0,b3,w6C #RAlt -> Home
2sudo ectool raw 0x3E0C d1,d1,b0,bc,w69 #RCtrl -> End
3sudo ectool raw 0x3E0C d1,d1,b4,b4,w14 #Caps Lock -> Ctrl
To put Caps Lock back to it's original state:
1sudo ectool raw 0x3E0C d1,d1,b4,b4,w58 #Caps Lock -> back to Caps Lock
The Old Way #
Note: this only works on X11, not Wayland.
Create a file in your home folder called ".Xmodmap"
nano ~/.Xmodmap
Put the following as the file's contents:
clear control
clear mod1
! right alt becomes home
keycode 108 = Home Home Home Home
! right ctrl becomes end
keycode 105 = End End End End
add control = Control_L
add mod1 = Alt_L Meta_L
If you also want to map Caps Lock to Ctrl, use these contents instead:
clear lock
clear control
clear mod1
! caps lock becomes right control
keycode 66 = Control_R
! right alt becomes home
keycode 108 = Home Home Home Home
! right ctrl becomes end
keycode 105 = End End End End
add control = Control_L Control_R
add mod1 = Alt_L Meta_L
Reload the keyboard mapping:
xmodmap ~/.Xmodmap