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UKBD(4)                FreeBSD Kernel Interfaces Manual                UKBD(4)

     ukbd - USB keyboard driver

     device ukbd

     The ukbd driver provides support for keyboards that attach to the USB
     port.  usb(4) and one of uhci(4) or ohci(4) must be configured in the
     kernel as well.

     By default, the keyboard subsystem does not create the appropriate
     devices yet.  Make sure you reconfigure your kernel with the following
     option in the kernel config file:

           options KBD_INSTALL_CDEV

     Go to /dev and make device nodes kbd*:

           sh MAKEDEV kbd0 kbd1

     If both an AT keyboard as well as USB keyboards are used at the same
     time, the AT keyboard will appear as kbd0 in /dev.  The USB keyboards
     will be kbd1, kbd2, etc.  You can see some information about the keyboard
     with the following command:

           kbdcontrol -i < /dev/kbd1

     or load a keymap with

           kbdcontrol -l keymaps/pt.iso < /dev/kbd1

     See kbdcontrol(1) for more possible options.

     You can swap console keyboards by using the command

           kbdcontrol -k /dev/kbd1

     From this point on onwards, the first USB keyboard will be the keyboard
     to be used as the console.

     If you want to use a USB keyboard as your default and not use an AT
     keyboard at all, you will have to remove the device atkbd line from the
     kernel configuration file.  Because of the order of the device
     initialization, the USB keyboard will be detected after the console
     driver initializes itself and you have to explicitly tell the console
     driver to use the existence of the USB keyboard.  This can be done in one
     of the following two ways.

     Run the following command as a part of system initialization:

           kbdcontrol -k /dev/kbd0 < /dev/ttyv0 > /dev/null

     (Note that as the USB keyboard is the only keyboard, it is accessed as
     /dev/kbd0) or otherwise tell the console driver to periodically look for
     a keyboard by setting a flag in the kernel configuration file:

           device sc0 at isa? flags 0x100

     With the above flag, the console driver will try to detect any keyboard
     in the system if it did not detect one while it was initialized at boot

           options KBD_INSTALL_CDEV

     Make the keyboards available through a character device in /dev.

           options UKBD_DFLT_KEYMAP
           makeoptions "UKBD_DFLT_KEYMAP=fr.iso"

     The above lines will put the French ISO keymap in the ukbd driver.  You
     can specify any keymap in /usr/share/syscons/keymaps with this option.


     Do not allow the user to change the keymap.  Note that these options also
     affect the AT keyboard driver, atkbd(4).

     /dev/kbd*      blocking device nodes

           device ukbd

     Add the ukbd driver to the kernel.

     kbdcontrol(1), ohci(4), syscons(4), uhci(4), usb(4), config(8)

     The ukbd driver was written by Lennart Augustsson
     <> for NetBSD and was substantially rewritten for
     FreeBSD by Kazutaka YOKOTA <>.

     This manual page was written by Nick Hibma <> with a
     large amount of input from Kazutaka YOKOTA

FreeBSD 11.0-PRERELEASE         April 11, 1999         FreeBSD 11.0-PRERELEASE


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