Skip site navigation (1)Skip section navigation (2)
Date:      Sun, 27 Nov 2011 12:09:00 -0600
From:      CyberLeo Kitsana <>
To:        h bagade <>
Subject:   Re: problem in changing serial console speed!
Message-ID:  <>
In-Reply-To: <>
References:  <>

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help
On 11/27/2011 12:07 AM, h bagade wrote:
> Hi all,
> I want to change serial console speed on freebsd 8.2. I've found out
> different way of doing so but none was successful! I've tried the following
> ways:
> 1- change /boot.config: add -S*speed
> *2- change /boot/loader.conf: add following lines
> boot_multicons="YES"
> boot_serial="YES"
> comconsole_speed="115200"
> console="comconsole,vidconsole"
> 3- change /etc/ttys as follows:
> ttyu0    "/usr/libexec/getty std.115200"    vt100    on secure
> none of the above methods worked and only changing /etc/makefile had an
> effect on serial console speed which is not appropriate.
> Is there anything else should be take in to consideration in any of the
> ways? What am I missing?

You have to do all of them.

With my Intel SS4200 NAS boxen (which are headless), I do the following:

Set the serial port to 115200 in the bios and disable console
redirection after boot.

Add to /boot.config to set boot block serial speed:
-h -S115200

Add to loader.conf to set /loader serial speed:

Edit /etc/ttys to set serial login speed:
ttyu0 "/usr/libexec/getty std.115200" vt100 on secure

This is sufficient to completely replace the emulated VGA with native
serial output across all phases of the boot sequence, from the boot
block through /loader, kernel and startup messages, all the way to login.

Some changes may be necessary if you intend to use a serial port other
than 0, or if you wish to have both serial and VGA consoles available.

Fuzzy love,
Technical Administrator
CyberLeo.Net Webhosting

Furry Peace! -

Want to link to this message? Use this URL: <>