Date: Tue, 11 Apr 2000 07:52:41 -0500 (CDT) From: Joe Greco <jgreco@ns.sol.net> To: smp@freebsd.org Subject: Re: Any problems with serial consoles? Message-ID: <200004111252.HAA20496@aurora.sol.net>
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I've a continuing (multi-year) issue with serial consoles on SMP machines. The general issue is that, during bootup, the console "loses it" and seems to switch baud rates or something, and all user I/O becomes garbage. However, kernel messages continue to print out correctly(!). The hardware I typically use is ASUS P2B-DS, large RAM (512MB+), Adaptec 3940's, and SMC Dual EtherPower 10/100(s). The OS revs are basically everything from 3.0 on up, IIRC. The system continues to boot just fine, and eventually the getty on ttyd0 will clear up the situation by resetting the terminal modes. I infrequently see the situation reassert itself after boot, usually after very long uptimes. The real problem is single-user mode. The sequence # ccdconfig -Cv; mount -a; sh /etc/netstart is at least 50% likely to leave the system in the state described, which of course means that it cannot hear further commands such as "reboot god damn it I don't want to drive to Chicago to reset you". So I usually end up doing something like # (sleep 900; reboot)& # ccdconfig -Cv; mount -a; sh /etc/netstart; stty sane; reset which generally seems not to fail in the described manner. I used to be fairly sure it was something in the networking that was causing the problem, but recently I ran into the situation when I was merely puttering with the disks after doing a "vinum start; mount -a" type affair. Solutions solicited. I may be able to provide a box with the described syndrome if anyone wants to look at it. ... Joe ------------------------------------------------------------------------------- Joe Greco - Systems Administrator jgreco@ns.sol.net Solaria Public Access UNIX - Milwaukee, WI 414/342-4847 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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