USB keyboard problems

Matthew Dillon dillon at
Wed Jan 7 12:54:45 PST 2004

:I finally got a few minutes to play with several keyboards and CMOS options
:to see what is going on with my keyboard on my ASUS A7N8X-Deluxe
:motherboard.  I need USB Legacy Keyboard and Mouse support enabled for
:things like GRUB and Plan 9 but when I boot into DragonFly with this
:CMOS option enabled I can't use my keyboard.
:If I turn off legacy USB support on the keyboard it works fine in
:DragonFly but not in GRUB [at all].  I can of course just twiddle the
:bits when I boot dragonfly as a workaround for now but this seems like
:a bug that needs fixing as I don't have this problem in Windows or
:other OSes...
:I wish I had more information than a dmesg dump but here it is:

    Similar problems have been posted to the FreeBSD groups.  The
    concensus seems to be that a lot of BIOSes have severely broken USB
    legacy keyboard support and that you are better off either using 
    a normal PS/2 keyboard, a USB-to-PS2 converter on your keyboard
    cable, or going native USB all the way.


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