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Date:      Mon, 27 Feb 2006 10:51:35 +0200
From:      Ruslan Ermilov <ru@freebsd.org>
To:        Dimitry Andric <dimitry@andric.com>
Cc:        stable@freebsd.org, Ed Maste <emaste@phaedrus.sandvine.ca>
Subject:   Re: RELENG_6: serial console drops back from 115200 to 9600 baud
Message-ID:  <20060227085135.GL42677@ip.net.ua>
In-Reply-To: <44020EDA.1070609@andric.com>
References:  <4400D235.9030807@andric.com> <20060225225621.GA42888@sandvine.com> <4400E70F.2020902@andric.com> <20060226005712.GA48900@sandvine.com> <44010644.4000504@andric.com> <20060226021457.GB55658@sandvine.com> <44020EDA.1070609@andric.com>

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On Sun, Feb 26, 2006 at 09:26:02PM +0100, Dimitry Andric wrote:
> Ed Maste wrote:
> > So I suspect that the following happens when you boot:
> >=20
> > - your BIOS sets the serial port to 9600
>=20
> Yes.
>=20
> > - boot0 does nothing with the serial pot
>=20
> I'm using 'dangerously dedicated' disks, so it's only boot[12] that is us=
ed.
>=20
> > - boot1/2 reads the -P in /boot.config and detects no keyboard, and
> >   then sets the serial port to 9600 and the console to comconsole
>=20
> Indeed, I never got the "/boot.config: -P" message on the serial console
> before.  Now I get it, using updated boot blocks.
>=20
> > - the loader detects that the serial port is enabled and is already
> >   set to 9600
>=20
> > Thus, I'm not surprised that you get a 9600 baud console without
> > an rc.conf setting.  The thing that concerns me is your report that
> > the console does not run at 115200 even if /boot/loader.conf
> > contains comconsole_speed=3D"115200".
>=20
> This turns out to be an error on my part, sorry to have you worried. :)
> I'd accidentally put "console_speed=3D115200" in loader.conf.  With
> "comconsole_speed=3D115200" and 9600 baud boot blocks, it works okay,
> although you don't see any of the boot[12] messages, of course.
>=20
> That's why installing 115200 baud boot blocks is still the better
> solution for me; my BIOS doesn't have any possibility to set the COM
> port speeds...
>=20
The best for you would be to add -S115200 in /boot.config, after
reinstalling new boot blocks (bsdlabel -B), and throw everything
else that's related from make.conf and loader.conf.


Cheers,
--=20
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer

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