Created attachment 90226 [details]
Patch for Samsung 700G Fn keys mapping

I'm using udev-208 on Gentoo. I found that some of my Fn keys are not working, namely - keyboard backlit up/down, fan control and settings.

$ cat /sys/class/dmi/id/product_name
700G7C

After some googling I found that I need to look into this file:
/lib/udev/hwdb.d/60-keyboard.hwdb
I found plenty of Samsung models in there, but not mine. I actually managed to add my model by changing this:

# Series 5
keyboard:dmi:bvn*:bvr*:bd*:svn[sS][aA][mM][sS][uU][nN][gG]*:pn*700Z*:pvr*
 KEYBOARD_KEY_ce=!prog1                                 # Fn+F1 launch settings
 KEYBOARD_KEY_a0=!mute                                  # Fn+F6 mute
 KEYBOARD_KEY_ae=!volumedown                            # Fn+F7
 KEYBOARD_KEY_b0=!volumeup                              # Fn+F8
 KEYBOARD_KEY_97=!kbdillumdown                          # Fn+F9 keyboard backlight down
 KEYBOARD_KEY_96=!kbdillumup                            # Fn+F10 keyboard backlight up
 KEYBOARD_KEY_b3=!prog3                                 # Fn+F11 fan/cooling mode changer
 KEYBOARD_KEY_d5=!wlan                                  # Fn+F12 wlan/airplane switch


to that:
# Series 5
keyboard:dmi:bvn*:bvr*:bd*:svn[sS][aA][mM][sS][uU][nN][gG]*:pn*700Z*:pvr*
keyboard:dmi:bvn*:bvr*:bd*:svn[sS][aA][mM][sS][uU][nN][gG]*:pn*700G*:pvr*
 KEYBOARD_KEY_ce=!prog1                                 # Fn+F1 launch settings
 KEYBOARD_KEY_a0=!mute                                  # Fn+F6 mute
 KEYBOARD_KEY_ae=!volumedown                            # Fn+F7
 KEYBOARD_KEY_b0=!volumeup                              # Fn+F8
 KEYBOARD_KEY_97=!kbdillumdown                          # Fn+F9 keyboard backlight down
 KEYBOARD_KEY_96=!kbdillumup                            # Fn+F10 keyboard backlight up
 KEYBOARD_KEY_b3=!prog3                                 # Fn+F11 fan/cooling mode changer
 KEYBOARD_KEY_d5=!wlan                                  # Fn+F12 wlan/airplane switch


So first thing is - can you add this line in the repo?

Second - "Series 5" comment is indeed misleading for 700XXX series laptops...

Third thing:
few lines down in the file, there's a block:
keyboard:dmi:bvn*:bvr*:bd*:svn[sS][aA][mM][sS][uU][nN][gG]*:pn*700Z*:pvr*
 KEYBOARD_KEY_ba=ejectcd
 KEYBOARD_KEY_96=keyboardbrightnessup
 KEYBOARD_KEY_97=keyboardbrightnessdown

Apparently, this simply doesn't work, at least 2 last lines, as (it seems) keyboardbrightnessup/down is not correct key. I tried changing the blocks above from kbdillumdown/up to keyboardbrightnessdown/up and found that udev simply ignores those rules and doesn't apply these codes. So I guess this block can be removed altogether to avoid confusion.

PS I now got my keys recognized by X correctly as XF86KbdBrightnessUp/XF86KbdBrightnessDown but they are not doing anything - I wonder if someone happens to know how to fix that?..