I use a Microsoft Natural Ergonomic Keyboard 4000 on Ubuntu 10.10. The multimedia keys (Volume, Play/Pause) work, the Mail and Calculator button as well.

Now I would love to use the zoom slider, if it were possible I'd like to use page scrolling with that. Is there some way to enable that?


Create the file /etc/udev/rules.d/98-ms-ergo.rules with the following contents:

ACTION=="remove", GOTO="keyboard_end"
KERNEL!="event*", GOTO="keyboard_end"
ENV{ID_INPUT_KEY}=="", GOTO="keyboard_end"
SUBSYSTEMS!="usb", GOTO="keyboard_end"

SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id"

ENV{ID_VENDOR}=="Microsoft", ENV{ID_MODEL_ID}=="00db", RUN+="keymap $name 0xc022d pageup 0xc022e pagedown"


This will map the zoom key to page-up/page-down without changing the installed files in /lib/udev.

Once added, you just need to unplug and replug your keyboard for it to start working.

  • This worked for me flawlessly using Fedora 19. – Rubens Mariuzzo Jul 9 '14 at 15:53
  • For the Microsoft Ergonomic 7000, the model appears to be 071d (as obtained by lsusb) rather than 00db - so if anyone tries this for 7000 they should probably replace 00db with 071d in the above file. Anyway in my case (Ubuntu 14.04), that doesn't work, maybe it's related to the fact evtest shows that the zoom slider doesn't trigger any event, unlike most other keys of the Ergonomic 7000 keyboard that do. Not sure about that as the Web/Home button does not show any output in evtest either - although Ubuntu does pick it up. – matt Sep 24 '14 at 20:49
  • 1
    I can't get the 4000 to work on 14.04 either. Not seeing events in xev. – Michael Oct 6 '14 at 5:05
  • Tried this on 14.10, and didn't work. – Rubens Mariuzzo Jan 15 '15 at 21:46
  • @Cocoabean xev doesn't work for me either. What does is evtest /dev/input/event3. If event3 doesn't have any reaction to this key, test with other events (event[0..9]). – Nicolás Jul 11 '16 at 3:10

On Xubuntu 13.10 (perhaps on Ubuntu 13.10 too) the same can be done as follows:

Edit key mappings in /lib/udev/hwdb.d/60-keyboard.hwdb:

# Microsoft

# Microsoft Natural Ergonomic Keyboard 4000

Run sudo udevadm hwdb --update


  • 1
    Worked on 14.04 for me – Amir Uval Jun 4 '14 at 22:41
  • My 60-keyboard.hwdb had an existing entry for MNEK4K, with keyboard:usb:b0003v045Ep00DB*. Changing the actions did not work. Adding a new entry with those actions did work. – Alrekr Dec 25 '15 at 20:48
  • Worked like a charm on 16.04. I used "up" and "down" (instead of resp. "pageup" and "pagedown") to get a smoother scroll when browsing web pages. Thanks a lot! – Pierre Nov 5 '16 at 15:19
  • You may map to katakana and katakanahiragana (or any other unused keycode from hal.freedesktop.org/quirk/quirk-keymap-list.txt ) rather than alias to existing keys. This way you can recognize and use the keys in combination with modifiers to toggle volume, language, size, etc (configure your window manager to enjoy two new super-keys). – dmitry_romanov Aug 14 '17 at 6:02

In order to configure the Microsoft ergonomic keyboard 4000 we have to create a configuration file that contains the keyboard declaration and the records for mapping the keys.

To do so there are three types of information we need to determine:

  • Keyboard type
  • The key scancode which is the actual key on the keyboard
  • The key name to assign the desired functionality to the selected key

First find the keyboard type:

In terminal run the following command:


the output determines the keyboard type:

Bus 004 Device 022: ID 045e:00db Microsoft Corp. Natural Ergonomic Keyboard 4000 V1.0

It appears after ID. In this case it is 045e:00db

Second find the scancode and the name of the key.

To determine them, we use the evtest program which logs out the event information of a specific device on terminal:


If you don't have the program, install it by running the following command:

sudo apt-get install evtest

By running the evtest program we get the following output:

No device specified, trying to scan all of /dev/input/event* Available devices: 
/dev/input/event0:    Power Button     
/dev/input/event1:    Power Button     
/dev/input/event2:    PixArt USB Optical Mouse   
/dev/input/event3:    Microsoft Natural® Ergonomic Keyboard 4000   
/dev/input/event4:    Microsoft Natural® Ergonomic Keyboard 4000   
/dev/input/event5:    HDA Intel Front Headphone     
/dev/input/event6:    HDA Intel Line Out     
/dev/input/event7:    HDA Intel Line   
/dev/input/event8:    HDA Intel Rear Mic     
/dev/input/event9:    HDA Intel Front Mic     
/dev/input/event10:   HDA ATI HDMI HDMI/DP,pcm=3
Select the device event number [0-10]:

The output is pretty much self explanatory, insert the appropriate number for the keyboard, which here is number 3 then hit enter:

Doing so, will output lots of information on the terminal and ends in following lines:


Testing ... (interrupt to exit)
Event: time 1472203902.240594, type 17 (EV_LED), code 0 (LED_NUML), value 0
Event: time 1472203902.240594, -------------- SYN_REPORT ------------
Event: time 1472203902.281456, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70058
Event: time 1472203902.281456, type 1 (EV_KEY), code 96 (KEY_KPENTER), value 0
Event: time 1472203902.281456, -------------- SYN_REPORT ------------

Now with every key-press on the keyboard it dumps out the key information. For example the Slash key next to the Right Shift shows:

Event: time 1472205062.294078, type 4 (EV_MSC), code 4 (MSC_SCAN), value 70038
Event: time 1472205062.294078, type 1 (EV_KEY), code 12 (KEY_SLASH), value 0
Event: time 1472205062.294078, -------------- SYN_REPORT ------------

The first line of the log contains the information about the actual key on the keyboard such as scancode which comes after the value. In this case it is 70038

The second line contains the assigned functionality information like name of the key. In this case it is SLASH. Examine the other keys to find their appropriate names.

So in a nutshell:

  • Our keyboard type is: 045e:00db
  • The scancode of the Slash key is: 70038
  • The name of the key for assigning is SLASH

After gathering the necessary information we create the configuration file:

sudoedit /etc/udev/hwdb.d/61-keyboard-local.hwdb

Hit i to activate the Insert mode and type the following:


Save and exit by pressing escape then typing :wq and hit enter.

Then run the following two commands for the configuration to take effect:

sudo udevadm hwdb --update
sudo udevadm control --reload

Finally unplug the keyboard and re-plug it in.

Some notes about the configuration file:

  • The format of the file should be exactly as shown, the space before mapping records is critical.
  • Instead of sudoedit you can use any other text editor, just remember to follow the exact format of the file as explained above.
  • There are two characters added to the keyboard type: v and p which stand for vendor and product. They are important as well.
  • The keyboard type is written uppercase in the configuration file. Our keyboard type was 045e:00db but in the configuration we insert v045Ep00DB*
  • The scancode of the key comes right after KEYBOARD_KEY_
  • The key name appears in lowercase in configuration file
  • You can customize pretty much every key on your keyboard following this tutorial.

The problem is that evdev driver ignores keycodes > 255.
The solution, thanks to Marco Chiappero:

1) you have to define all the remappings that you need (in the form of 
"scancode keycode" list) and place them in a file under "/lib/udev/keymaps/" 
(for example I created logitech-lx710-cordless there). You can find the 
scancodes using evtest ("sudo evtest /dev/input/eventX", where X is your 
keyboard device. Be careful, sometimes these extra keys are exposed through 
a different device or your mouse interface: eg. event3 --> kbd, event4 --> 
mouse & extra keys). Here some sample output:

Event: time 1294153475.909379, type 4 (Misc), code 4 (ScanCode), value c1028
"c1028" is the scancode value you're going to place in your keymap file, then 
pick up a number from input.h as described earlier and convert it to 
hexadecimal. Then write the remap pair in your file, maybe with a descriptive 
comment, like this:

0xC1028 0x9a # rotate button

Iterate for every key > 255.

2) you have to tell udev to apply this remapping file everytime it encounters 
your keyboard, so edit the "/lib/udev/rules.d/95-keymap.rules" file adding 
the udev rule that matches your HW. Please don't ask me to define a rule for 
NOTE: you can immediately apply your keymap file by yourself typing 
"sudo /lib/udev/keymap /dev/input/eventX /lib/udev/keymaps/$YOUR_FILE" and 
verify it with evtest once again.

Now, you can use the Gnome shortcuts editor to see that the keys are now 
usable inside X and create new shortcuts. However it might happen that no 
keysym is assigned to that keycode (so you'll see 0xXY instead of XF86Foo). 
You can see current mappings through xmodmap -pke, save the output into a 
file and edit it if you need (a full keysym code list is available in
Once you added the keysyms to those keys you remapped, you can save this file
as ~/.Xmodmap (or as /etc/X11/Xmodmap if you wish to apply to every user).
  • I figures out that the buttons I want are c022d and c022e, but I cannot find the input.h. – Martin Ueding Apr 24 '11 at 13:19
  • As I understand (but I can't test because I don't have this hardware) you don't really need input.h, you just need to edit this file: /lib/udev/rules.d/95-keymap.rules. (May be here at launchpad you can find people with the same hardware therefore more able to help bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/313514 ). Have you edited the file I mentioned above? – desgua Apr 24 '11 at 13:37
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    This is far too technical and disorganized an answer for most people. A few serious gaps: no help on determining the appropriate /dev/input/eventX, unclear steps mixed in with contextual information and requests not to ask for instructions for creating keymaps. – Alain O'Dea Aug 5 '11 at 0:16
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    evtest isn't even installed by default making this even worse. – Alain O'Dea Aug 5 '11 at 0:21
  • Through trial and error I found that my keyboard is /dev/input/event3 and evtest doesn't pick up any events from the zoom slider. – Alain O'Dea Aug 5 '11 at 0:26

On my machine, extra keys (HomePage, Search, Calc, etc.) and zoom input were sent though /dev/input/event5 whereas ordinary keys were sent through /dev/input/event4. Zoom key value agree with queueoverflow's.

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