If you are using Microsoft Natural Ergonomic Keyboard 4000 as I do you may wondered how to get that zoom slider in a middle to be useful. Thanks to Hans de Goede there is a solution.
There is one new file and changes to other needed. First we need to instruct udev to remap some keys for us. Create /lib/udev/hwdb.d50-msoffice-keyboard-xorg.hwdb file with this content:
# classic msoffice keyboard keyboard:usb:v045Ep0048d*dc*dsc*dp*ic*isc*ip*in01* KEYBOARD_KEY_0c0184=documents # KEY_WORDPROCESSOR to KEY_DOCUMENTS KEYBOARD_KEY_0c0186=finance # KEY_SPREADSHEET to KEY_FINANCE KEYBOARD_KEY_0c018e=chat # KEY_CALENDAR to KEY_CHAT KEYBOARD_KEY_0c01a3=nextsong # KEY_NEXT to KEY_NEXTSONG KEYBOARD_KEY_0c01a4=previoussong # KEY_PREVIOUS to KEY_PREVIOUSSONG KEYBOARD_KEY_0c01ab=search # KEY_SPELLCHECK to KEY_SEARCH # Microsoft Natural Ergonomic Keyboard 4000 keyboard:usb:v045Ep00DB* KEYBOARD_KEY_0c01ab=search # KEY_SPELLCHECK to KEY_SEARCH KEYBOARD_KEY_0c022d=scrollup # KEY_ZOOMIN to KEY_SCROLLUP KEYBOARD_KEY_0c022e=scrolldown # KEY_ZOOMOUT to KEY_SCROLLDOWN
In Fedora rawhide I also needed to edit 60-keyboard.hwdb file (same directory) to disable some definitions:
# Microsoft Natural Ergonomic Keyboard 4000 #keyboard:usb:v045Ep00DB* # KEYBOARD_KEY_c022d=zoomin # KEYBOARD_KEY_c022e=zoomout
Now update of hwdb is needed:
sudo udevadm hwdb --update sudo udevadm control --reload
And the only thing left is replugging the keyboard (or system reboot). As a bonus you get XF86Search button instead of non-working Spell (F10). Those who use Microsoft Office Keyboard (old one with scroller on left side) will get all keys working as well but they also need 3.14 kernel to get all recent fixes.
And why all that is needed at all? Simple — Xorg is still sitting in 80s when it comes to handling keyboard and ignores all keycodes with >8bit values. I hope that Wayland does not follow that way and does/will just take whatever system under is telling about input devices.