Date: Wed, 26 Aug 2009 16:22:29 +0200 From: Thomas Backman <serenity@exscape.org> To: freebsd-questions@freebsd.org Cc: FreeBSD current <freebsd-current@freebsd.org> Subject: Re: Serial console trouble: loader and login works, but no kernel messages Message-ID: <41DD14F2-DCF8-4CA7-AFC0-7EB766A07DF0@exscape.org> In-Reply-To: <2E76B1A5-C7B3-4845-9919-1C9FFC7EDA63@exscape.org> References: <2E76B1A5-C7B3-4845-9919-1C9FFC7EDA63@exscape.org>
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On Aug 23, 2009, at 14:18, Thomas Backman 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 OK, so to rule out any installation-related problems, I booted from a bootonly install CD (a May ~5th snapshot of 8.0-CURRENT), with "boot - h -S115200". Same thing: bootloader stuff on the serial console, kernel messages on the local computer only - and very slowly, at that, I'd say about one line a second. You could very easily see the characters being written to the screen. Am I the only one having these problems? It'd suck to buy a rather expensive (probably because they're pretty rare these days, plus I had to order from abroad) null modem cable and have it be completely useless. Regards, Thomas
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