RELENG_6: serial console drops back from 115200 to 9600 baud
dimitry at andric.com
Sun Feb 26 12:28:48 PST 2006
Ed Maste wrote:
> So I suspect that the following happens when you boot:
> - your BIOS sets the serial port to 9600
> - boot0 does nothing with the serial pot
I'm using 'dangerously dedicated' disks, so it's only boot that is used.
> - 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
Indeed, I never got the "/boot.config: -P" message on the serial console
before. Now I get it, using updated boot blocks.
> - the loader detects that the serial port is enabled and is already
> set to 9600
> 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="115200".
This turns out to be an error on my part, sorry to have you worried. :)
I'd accidentally put "console_speed=115200" in loader.conf. With
"comconsole_speed=115200" and 9600 baud boot blocks, it works okay,
although you don't see any of the boot messages, of course.
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
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