l i n u x - u s e r s - g r o u p - o f - d a v i s
Next Meeting:
July 7: Social gathering
Next Installfest:
Latest News:
Jun. 14: June LUGOD meeting cancelled
Page last updated:
2008 Dec 11 22:32

The following is an archive of a post made to our 'vox-tech mailing list' by one of its subscribers.

Report this post as spam:

(Enter your email address)
Re: [vox-tech] a reboot powers off machine
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [vox-tech] a reboot powers off machine

On Tue, 9 Dec 2008, Scott Miller wrote:

> Ok here's a good one, if you have any ideas. Machine is a circ 1999
> Pentium II 400Mhz Gateway running Debian Lenny. Two IDE drives in RAID
> 1. This is my home server.
> Issuing 'sudo reboot', 'init 6', 'shutdown -r now', etc. powers off
> the machine. No reboot. At the end, the last message I see is:
> Will now Halt
> Do you have any ideas? There are pretty much zero options in the BIOS.
> The only thing having to do with power is to enable or disable BIOS
> power management. I've tried turning that off, but it makes no
> difference here.
> All logs seem to look normal and fine. I can't seem to find anything
> hanging, or that would be causing it to power off instead of reboot.
> Maybe this thing is too old to have proper power management?

I had somewhat of the inverse situation with a new Dell machine where 
issuing halt would not halt the machine. It turned out to be some 
"automagic" detection that the kernel was doing to determine how to reboot 
and halt Dells was not working correctly on that machine. The file 
involved in the kernel is arch/i386/kernel/reboot.c. Depending on what 
version of the kernel you are running (since you didn't say if you'd 
updated that from the default), there will be varying levels of this 
automagic detection and it might have more than just Dells on the list. My 
solution was to send the option "reboot=bios" to the kernel on booting. 
This overrides the automagic detection. There are other arguments to that 
option (see reboot.c for a list) that may be needed on your system.

vox-tech mailing list

LUGOD Group on LinkedIn
Sign up for LUGOD event announcements
Your email address:
LUGOD Group on Facebook
'Like' LUGOD on Facebook:

Hosting provided by:
Sunset Systems
Sunset Systems offers preconfigured Linux systems, remote system administration and custom software development.

LUGOD: Linux Users' Group of Davis
PO Box 2082, Davis, CA 95617
Contact Us

LUGOD is a 501(c)7 non-profit organization
based in Davis, California
and serving the Sacramento area.
"Linux" is a trademark of Linus Torvalds.

Sponsored in part by:
O'Reilly and Associates
For numerous book donations.