Working Keyboard in 5.x

Doug White dwhite at
Wed May 18 16:01:20 PDT 2005

On Mon, 16 May 2005, Holtor wrote:

> Does anyone know how to make a PS/2 keyboard work when plugged into a
> system booted without a keyboard on FreeBSD 5.x? It doesn't seem to
> work.

This is a system-specific thing. As noted previously clearing flag 0x1 on
atkbd0 can help this, but it doesn't always work on all motherboards.  To
do this, edit /boot/device.hints and make sure there is no
"hint.atkbd.0.flags" line. Reboot to have the change take effect.

_Technically_, ps/2 is not hotplug -- you risk severe electrical damage to
the system by hotplugging ps/2 keyboards and mice.  If you do this
frequently you may consider investing in a KVM.

> For example in 4.x the default GENERIC kernel line is:
> device          atkbd0  at atkbdc? irq 1 flags 0x1
> If you leave that line alone, the ps/2 keyboard will not work if a system
> booted without one plugged in. But if you remove the "flags 0x1" it will
> work fine.
> Does anyone know how to make the PS/2 work properly in 5.x?
> Thank you,
> Holt G.
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Doug White                    |  FreeBSD: The Power to Serve
dwhite at          |

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