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SubjectRe: serial console on x86
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On Thu, 2003-09-04 at 12:45, David Lang wrote:
> I am attempting to install linux (debian 3 based) on some dual athlon
> boxes with no video card. The BIOS does include serial console
> capabilities
>
> once the system is installed I have no problem booting from the hard
> drive, but when I attempt to boot from a CD to install (ISOLINUX custom
> boot disk) I see the lilo prompt, the loading kernel message, the loading
> initrd.gz message and then it prints 'Ready.' and reboots the same
> bootdisk will work just fine if I install a video card in the machine (and
> the same kernel with lilo boots just fine without a video card after it
> gets installed)
>
> any ideas why the kernel may crash before printing any messages in this
> situation? I've tried this with 2.4.17 and 2.4.22 with the exact same
> results.
>
> David Lang
> -
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David,

Do you have a SERIAL directive in your syslinux.cfg (or ISOLINUX
equivalent) file on the boot CD?

Per the Syslinux readme.doc:


SERIAL port [[baudrate] flowcontrol]

I have been using:

serial 0 38400 0x003

on an embedded system, booting from either a CompactFlash or
DiskOnChip.

My flowcontrol parm is:

0x001 - Assert DTR + 0x002 - Assert RTS for a NULL modem cable.

The port number corresponds to ports detected by the BIOS.

Bob...
---
Bob Chiodini
Senior Engineer
ASRC Aerospace
M/S ASRC-18
Kennedy Space Center, FL 32899
321-867-6313 (voice)
321-867-6300 (fax)
bob.chiodini@ksc.nasa.gov
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