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#1 (**permalink**) 01-16-2008, 11:33 AM

Hi,

I have a problem with some of my SunFire V120 hanging on reboot.
If I type a 'reboot' or 'init 6' as root, the machine starts to
reboot, but does not come up again.

This is with nothing connected to the console port, serial A.
The second, I connect a console switch to the console port, booting
continues.

I have not found anything about this problem either on the sun pages,
or through google.

Any ideas?

# /usr/platform/`uname -i`/sbin/eeprom | grep ttya
ttya-rts-dtr-off=false
ttya-ignore-cd=true
ttya-mode=9600,8,n,1,-
output-device=ttya
input-device=ttya

# grep ' console' /etc/inittab
co:234:respawn:/usr/lib/saf/ttymon -g -h -p "`uname -n` console login: " -T vt100 -d /dev/console -l console -m ldterm,ttcompat

# grep console: /etc/ttydefs
console:9600 hupcl opost onlcr:9600::console

Regards
Andreas
--
* Andreas Buschmann Internet PoP Hannover GmbH
* Vahrenwalder Strasse 205, D-30165 Hannover
* email: buschman@pop-hannover.net

#2 (**permalink**) 01-16-2008, 11:33 AM

Andreas Buschmann <buschman@pop-hannover.net> wrote:
> I have a problem with some of my SunFire V120 hanging on reboot.
> If I type a 'reboot' or 'init 6' as root, the machine starts to
> reboot, but does not come up again.
>
> This is with nothing connected to the console port, serial A.
> The second, I connect a console switch to the console port, booting
> continues.

Check the OBP setting 'ttya-ignore-cd' It should be set to "true", but
odds are you've got it set to "false", which causes the system to wait
until there's a CD on ttya before booting.

Scott

#3 (**permalink**) 01-16-2008, 11:33 AM

Andreas Buschmann <buschman@pop-hannover.net> writes:
>
>I have a problem with some of my SunFire V120 hanging on reboot.
>If I type a 'reboot' or 'init 6' as root, the machine starts to
>reboot, but does not come up again.
>
>This is with nothing connected to the console port, serial A.
>The second, I connect a console switch to the console port, booting
>continues.
>

Get to the open boot prom's "ok" prompt and type this:

setenv ttya-ignore-cd true

Then try booting without the console switch connected. I'm pretty
sure it will boot up.

-Greg
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Reply in the newsgroup.

#4 (**permalink**) 01-16-2008, 11:34 AM

Greg Andrews <gerg@panix.com> wrote:

> Andreas Buschmann <buschman@pop-hannover.net> writes:
ab>
ab>I have a problem with some of my SunFire V120 hanging on reboot.
ab>If I type a 'reboot' or 'init 6' as root, the machine starts to
ab>reboot, but does not come up again.
ab>
ab>This is with nothing connected to the console port, serial A.
ab>The second, I connect a console switch to the console port, booting
ab>continues.

> Get to the open boot prom's "ok" prompt and type this:

> setenv ttya-ignore-cd true

According to the eeprom program, this is already set, but I will try in
the next maintenance window.

# /usr/platform/`uname -i`/sbin/eeprom | grep ttya
ttya-rts-dtr-off=false
ttya-ignore-cd=true
ttya-mode=9600,8,n,1,-
output-device=ttya
input-device=ttya

Regards
Andreas
--
* Andreas Buschmann Internet PoP Hannover GmbH
* Vahrenwalder Strasse 205, D-30165 Hannover
* email: buschman@pop-hannover.net

#5 (**permalink**) 01-16-2008, 11:35 AM

In <bqhksd$41d$1@candy.pop-hannover.de> Andreas Buschmann <buschman@asysha.asys-h.de> writes:
># /usr/platform/`uname -i`/sbin/eeprom | grep ttya
>ttya-rts-dtr-off=false

you want to set ttya-rts-dtr-off to true.

#6 (**permalink**) 01-16-2008, 11:35 AM

ultrasparc3@hotmail.com writes:
>In <bqhksd$41d$1@candy.pop-hannover.de> Andreas Buschmann
><buschman@asysha.asys-h.de> writes:
>># /usr/platform/`uname -i`/sbin/eeprom | grep ttya
>>ttya-rts-dtr-off=false
>
>you want to set ttya-rts-dtr-off to true.
>

That won't make a difference. ttya-rts-dtr-off just sets
the RTS and DTR behavior when the OBP is in control of
the hardware. As soon as the kernel loads, the serial
port driver overrides ttya-rts-dtr-off. Boot-time hangs
usually occur long after the kernel has loaded.

-Greg
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V120 hanging on console I/O during reboot