Date: Fri, 22 Feb 2013 10:51:17 +1030 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Jeremy Chadwick <jdc@koitsu.org> Cc: Konstantin Belousov <kostikbel@gmail.com>, freebsd-stable@freebsd.org, Navdeep Parhar <nparhar@gmail.com>, John Baldwin <jhb@freebsd.org> Subject: Re: IPMI serial console Message-ID: <3FE71C9F-29B2-48F5-9A51-D312B1803E14@gsoft.com.au> In-Reply-To: <20130221232929.GA91708@icarus.home.lan> References: <00CC60B5-A6EB-4A3C-B8AC-1D60014DE442@gsoft.com.au> <201302211049.13863.jhb@freebsd.org> <E44ABF7A-3795-471B-B241-7103ECE2119E@gsoft.com.au> <51269ABD.2040308@gmail.com> <2AF6F8E4-A45E-4D4C-9232-FF09AD4A3641@gsoft.com.au> <5126A3A1.1030208@gmail.com> <64293C7A-038A-4EA1-B394-9E80CFCBC14F@gsoft.com.au> <20130221230001.GF2598@kib.kiev.ua> <20130221232929.GA91708@icarus.home.lan>
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On 22/02/2013, at 9:59, Jeremy Chadwick <jdc@koitsu.org> wrote: > The reason I've advocated use of -Sxxx in /boot.config for years is > because it gets around whatever idiocy there is in the FreeBSD kernel > pertaining to serial port speed limitation. Possibly those boot2 > changes I mentioned above have since dealt with this, but the = situation > used to be that without -Sxxx in /boot.config, you had to set > BOOT_COMCONSOLE_SPEED=3D115200 in /etc/make.conf (or during buildworld = and > buildkernel) to achieve a serial port speed >9600bps -- otherwise > FreeBSD would limit/cap the serial speed to 9600bps and you wouldn't = see > any output (even once getty(8) started -- yet switching the serial > connection to 9600bps instantly made things work). Like I said, > possibly this has been dealt with. Hmm I tried putting '-S 115200' in /boot.config and it broke - the boot = process didn't run the loader (or kernel). > Sorry for my rambling Email, but there's a lot of history and crap > contained here (almost 10 years worth) that's hard to cover tersely. So much cruft :( > For Daniel: have you tried a verbose boot, to see if you get = *anything* > prior to the initial "Copyright" line? (Keep a raw I/O dump too, to = see > if ANY characters are received, not just printable ones -- that can > sometimes help determine if some code is initialising something wrong) I had a look by running ipmitool inside script but I could not see any = characters after the BIOS prints a countdown to boot. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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