Subject: Re: Hardware Console Redirection
To: Greg A. Woods <>
From: Manuel Bouyer <>
List: netbsd-users
Date: 11/13/2006 22:14:41
On Sun, Nov 12, 2006 at 07:55:18PM -0500, Greg A. Woods wrote:
> > >
> > The drac [345] Cards actually hook into or present a new vga adapter to
> > the system (this can be seen as an ati chipset on the drac 4 pci addin
> > cards) They also present a soft keyboard an mouse to the system via a
> > set of usb devices.   If you also use the bios console redirection the
> > bios is sent to the configured serial port.
> Does this mean one can drive the BIOS setup screens, AS WELL AS all
> add-on card BIOS setup screens, and then see the kernel printfs and talk
> to a single user shell, all from a single serial port?

Only if the add-on card use standard VGA characters. If it uses some
graphical mode, it fails.

> > Using the drac web interface you can send the system a scroll lock and
> > scroll back the system console as if you where using the physical
> > console. So there is no need to be conected all of the time.
> That's just a feature of the FreeBSD console driver though, isn't it?
> (That you can send a scroll-lock keypress event is cool and all, but
> what about over a serial console?  That's all I care about.)

I think all this is over the remove KVM, not serial port.
And anyway if the system reboots you've lost the scroll-back.

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference