Customizing keyboard layout (xkb)

I have a Chromebook and on the top row there are 10 media keys. Currently, they all act as media keys except when I hold down an overlay key (Super_L) which then maps them to F1-F10. The only change I want is to remap media keys 1-5 to F1-F5 (so that I don't have to hold down the overlay key). I don't need media keys 1-5 (with or without overlay) because they're useless to me.

I was hoping I could solve this with xmodmap but it seems it doesn't play well with xkb (I lack the patience to learn all the xkb stuff...) Here's what happens when I use xmodmap:

Code:showkey -kI press media key 1 and it prints:
Quote:

keycode 59 press

next I remap with
Code:xmodmap -e "keycode 59 = F1"But media key 1 is still mapped to XF86Back and instead.... "comma" (next to M on my keyboard) is now mapped to F1. Weird.

If you happen to understand the quirks with xmodmap and help fix this, or if you could help me edit the necessary files in /usr/share/X11/xkb I would be really grateful! Info about my current layout:
Quote:

dava@debian:~$ setxkbmap -query rules: evdev model: chromebook_m layout: se

I don't know what file(s) I need to edit and there's A LOT of "chromebook" stuff in /usr/share/X11/xkb
Quote:

dava@debian:~$ find /usr/share/X11/xkb -name "chromebook*" /usr/share/X11/xkb/symbols/chromebook /usr/share/X11/xkb/symbols/chromebook_ralt /usr/share/X11/xkb/symbols/chromebook_m /usr/share/X11/xkb/symbols/chromebook_m_ralt /usr/share/X11/xkb/symbols/chromebook_m.backup /usr/share/X11/xkb/keycodes/chromebook_m /usr/share/X11/xkb/compat/chromebook

Quote:

dava@debian:~$ grep -ril "chromebook" /usr/share/X11/xkb /usr/share/X11/xkb/rules/base.lst /usr/share/X11/xkb/rules/evdev /usr/share/X11/xkb/rules/base.xml /usr/share/X11/xkb/rules/evdev.xml /usr/share/X11/xkb/rules/evdev.lst /usr/share/X11/xkb/rules/base

Here are two files I think I need to edit, but maybe I will need to edit other files as well??

/usr/share/X11/xkb/keycodes/chromebook_m
Quote:

default xkb_keycodes "media" { <FK01> = 166; //Back <FK02> = 167; //Forward <FK03> = 181; //Refresh <FK04> = 160; //Video next <FK05> = 235; //Video mode <FK06> = 232; //Brightness down <FK07> = 233; //Brightness up <FK08> = 121; //Mute <FK09> = 122; //Volume - <FK10> = 123; //Volume + <I166> = 67; // #define KEY_BACK <I167> = 68; // #define KEY_FORWARD <I181> = 69; // #define KEY_REFRESH <I160> = 70; // #define KEY_COFFEE <I235> = 71; // #define KEY_SWITCHVIDEOMODE <I232> = 72; // #define KEY_BRIGHTNESSDOWN <I233> = 73; // #define KEY_BRIGHTNESSUP <MUTE> = 74; <VOL-> = 75; <VOL+> = 76; };

/usr/share/X11/xkb/symbols/chromebook_m
Quote:

// This mapping assumes that inet(evdev) will also be sourced partial xkb_symbols "overlay" { key <LWIN> { [ Overlay1_Enable ], overlay1=<LWIN> }; key <I225> { [ Overlay1_Enable ], overlay1=<I225> }; key <AB09> { overlay1=<INS> }; key <LEFT> { overlay1=<HOME> }; key <RGHT> { overlay1=<END> }; key <UP> { overlay1=<PGUP> }; key <DOWN> { overlay1=<PGDN> }; key <I166> { overlay1=<FK01> }; key <I167> { overlay1=<FK02> }; key <I181> { overlay1=<FK03> }; key <I160> { overlay1=<FK04> }; key <I235> { overlay1=<FK05> }; key <I232> { overlay1=<FK06> }; key <I233> { overlay1=<FK07> }; key <MUTE> { overlay1=<FK08> }; key <VOL-> { overlay1=<FK09> }; key <VOL+> { overlay1=<FK10> }; key <AE01> { overlay1=<FK01> }; key <AE02> { overlay1=<FK02> }; key <AE03> { overlay1=<FK03> }; key <AE04> { overlay1=<FK04> }; key <AE05> { overlay1=<FK05> }; key <AE06> { overlay1=<FK06> }; key <AE07> { overlay1=<FK07> }; key <AE08> { overlay1=<FK08> }; key <AE09> { overlay1=<FK09> }; key <AE10> { overlay1=<I236> }; // KEY_KBDILLUMTOGGLE key <AE11> { overlay1=<I237> }; // KEY_KBDILLUMDOWN key <AE12> { overlay1=<I238> }; // KEY_KBDILLUMUP key <BKSP> { overlay1=<DELE> }; key <LALT> { overlay1=<CAPS> }; key <RALT> { overlay1=<CAPS> }; // For some strange reason, some Super_R events are triggered when // the Search key is released (i.e. with overlay on). // This maps RWIN to a dummy key (<I253>), to make sure we catch it. key <RWIN> { [ NoSymbol ], overlay1=<I253> }; // Map dummy key to no symbol key <I253> { [ NoSymbol ] }; };