Date: Sun, 23 Aug 2009 12:25:57 -0600 From: Tim Judd <tajudd@gmail.com> To: Thomas Backman <serenity@exscape.org> Cc: freebsd-questions@freebsd.org Subject: Re: Serial console trouble: loader and login works, but no kernel messages Message-ID: <ade45ae90908231125i77a0c552qcfa36f03188972de@mail.gmail.com> In-Reply-To: <2E76B1A5-C7B3-4845-9919-1C9FFC7EDA63@exscape.org> References: <2E76B1A5-C7B3-4845-9919-1C9FFC7EDA63@exscape.org>
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On 8/23/09, Thomas Backman <serenity@exscape.org> wrote: > First off: Not subscribed to this list, please make sure to Cc me if > you don't reply directly. :) > > Anyway, I finally got my null modem cable, and plugged in in between a > machine running 8.0-BETA2 and one running WinXP using Hyperterminal. > > My settings: > > /boot/loader.conf: > boot_multicons="YES" > boot_serial="YES" > comconsole_speed="115200" > console="comconsole,vidconsole" > > /etc/ttys: > # Serial terminals > # The 'dialup' keyword identifies dialin lines to login, fingerd etc. > ttyu0 "/usr/libexec/getty std.115200" vt100 on secure > > /boot.config (which is read properly): > -Dh -S115200 > > Anything wrong in the above? > Hyperterminal is set to 115200 bps, 8 bits, no parity, 1 stop bit, and > no flow control (if that's the correct translation to English). > > On the serial console, I go from the screen with the FreeBSD logo, > with single-user options etc. (which works fine), and then nothing, > until a login tty pops up (which also works fine). The main, if not > only, reason I want a serial console is to be able to use it for > single user mode, DDB, and so on. > All kernel messages, and all rc messages are seen only on the graphics > card; the serial console receives nothing but the "/boot.config: - > Dh ...", the logo screen, and then the login screen, during startup > and *nothing* at all during shutdown. Also, I'm able to login and use > the system both via the serial console and via the graphics card/ > keyboard... Is this supposed to be? I'm not complaining, I just got > the impression it was one or the other. > > Any advice on how to get the kernel/rc messages etc. to the serial > console (only or as well)? > > Regards, > Thomas Do you use the VGA/vidconsole at all? A serial-only device (think soekris, ALIX/WRAP boards) that has no VGA will have different requirements than a serial-only device will. Your loader.conf statements are different than mine in the definition that you have more than I do to enable serial. My loader.conf just has one statement: console="comconsole" - to feed ALL bootloaders, kernel probing, rc startup on the serial device. /etc/ttys defines the login lines. Though trial and error, I found when you use a dual-setup: "comconsole,vidconsole", the first one (comconsole) will get rc output, and vidconsole won't. Of course, you're on 8.0 and I don't run BETAs. So the 8.0 BETA might still be having com port oddities, plus I noticed your ttys line is ttyu0, not ttyd0. Did 8.0 change the serial line device? To enable a serial-only device in my setups: /boot/loader.conf: console="comconsole" /boot.config: -D /etc/ttys: # enable serial line, cons25 or vt100, depending if I'm originating from a bsd or windows box. Enabling dual-setups should be just the loader.conf change to dual console. HTH
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