[bug #14893] Grub hangs on unattended boot if serial and console are configured

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?func=detailitem&item_id=14893>

                 Summary: Grub hangs on unattended boot if serial and console
are configured
                 Project: GNU GRUB
            Submitted by: None
            Submitted on: Mon 10/31/05 at 21:04
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Chris Gardiner
        Originator Email: address@hidden
             Open/Closed: Open
                 Release: 0.93
         Reproducibility: Every Time
         Planned Release: 

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Details:

Hi everyone,
     I'm hoping someine can help me out here. I believe this is a bug but
can't be 100% sure I didn't just miss something. I have a CentOS (Basically
redhat) system installed fresh off the CD's using Grub 0.93. Everything boots
fine under normal circumstances. I recently added support for the system to
run with a serial console and I'm running into issues. I have configured
everything such that the console and serial terminal all work fine with one
exception. When I attempt to boot the system unattended, the system hangs
waiting for a key press to dertermine which console is the one to output to.

     By documentation, Grub is supposed to output to the device which has a
key press during the time out interval or after the timeout, default to the
first in the list. However, what I am seeing happening is that it times out
and then hangs. Worst of all, if I wait long enough, no keypress on either
the serial or the console will recover the system and I need to hard reboot.
This is a SERIOUS problem. It basically means that I can not remotely reboot
any server using a serial concertrator for console access without wathing the
system come up. 

    I am including a copy of my grub.conf file just in case I made some sort
of simple mistake someone might see.
Thanks!





#boot=/dev/sda
default=0
timeout=10
serial --unit=0 --speed=9600 --word=8 --parity=no --stop=1
terminal --dumb --timeout=2 serial console
#terminal --timeout=5 serial console
##splashimage=(hd0,0)/grub/splash.xpm.gz
title CentOS-3 (2.4.21-32.ELsmp)
        root (hd0,0)
        kernel /vmlinuz-2.4.21-32.ELsmp ro root=/dev/md0 console=tty0
console=ttyS0,9600
        initrd /initrd-2.4.21-32.ELsmp.img
title CentOS-3-up (2.4.21-32.EL)
        root (hd0,0)
        kernel /vmlinuz-2.4.21-32.EL ro root=/dev/md0 console=tty0
console=ttyS0
,9600
        initrd /initrd-2.4.21-32.EL.img






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Carbon-Copy List:

CC Address                          | Comment
------------------------------------+-----------------------------
cgardiner --AT-- readytechs --DOT-- com | Originator Email




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