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Date:      Sun, 7 Jan 2001 10:52:41 -0500 (EST)
From:      Robert Watson <rwatson@freebsd.org>
To:        Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
Cc:        hackers@freebsd.org, John Polstra <jdp@polstra.com>
Subject:   Re: KVM switch vs. FreeBSD psm driver (Solved!) 
Message-ID:  <Pine.NEB.3.96L.1010107104936.27948C-100000@fledge.watson.org>
In-Reply-To: <200101071136.UAA24356@zodiac.mech.utsunomiya-u.ac.jp>

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On Sun, 7 Jan 2001, Kazutaka YOKOTA wrote:

> I guess your KVM switch won't let the kernel talk to the keyboard, if
> the switch wasn't pointed to the FreeBSD box. 
> 
> Remove the flags 0x1 from atkbd in your kernel config file.  This flag
> makes atkbd fail, if it doesn't detect a keyboard.  Without the flag,
> atkbd will install regardless of the absence of the keyboard. 
> 
> In RELENG_2 and RELENG_3, this flag wasn't specified to atkbd by
> default. In RELENG_4, the flag was added to GENERIC so that syscons will
> use a USB keyboard, if any, when there is no AT keyboard. 

So, question: is there a reason why we can't enable both the USB keyboard
and a native PS/2 keyboard with syscons?  It seems that I frequently find
myself in a position where I'd like to plug in a keyboard, or switch KVM
choices to a machine, and discover myself with no access to the hardware
console, and I know at least one person who uses FreeBSD in production and
finds this to be a serious impediment (as it requires the system to be
rebooted to regain console access, and when you have 8 machines per KVM,
and you boot them all, switching back and forth to catch each probe is
effectively impossible).  Presumably our syscons is intended to select on
source of I/O and use it, but it might be worth considering a change here.

Robert N M Watson             FreeBSD Core Team, TrustedBSD Project
robert@fledge.watson.org      NAI Labs, Safeport Network Services




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