Bug 62083 - poweroff command does not turn off power.
Summary: poweroff command does not turn off power.
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
(Show other bugs)
Version: 9
Hardware: i386 Linux
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Jay Turner
Depends On:
TreeView+ depends on / blocked
Reported: 2002-03-27 09:47 UTC by Ivo Sarak
Modified: 2015-01-07 23:55 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2003-06-05 17:39:04 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)

Description Ivo Sarak 2002-03-27 09:47:31 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 Galeon/1.2.0 (X11; Linux i686; U;) Gecko/20020311

Description of problem:
Result of poweroff command is not a shutdown of power to motherboard and other
devices. Message remaining on screen "Power down."

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
Run a poweroff command.

Actual Results:  All devices are running and consuming power.

Expected Results:  Successful shutdown with turning off all devices.

Additional info:

Asustek A7M266-D with 2*AMD Athlon XP 1700+.

$ dmesg | grep apm
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16)
apm: disabled - APM is not SMP safe.

Comment 1 Preston Brown 2002-03-27 14:03:34 UTC
Arjan:  Aren't we supposed to have fixed this?

Comment 2 Arjan van de Ven 2002-03-27 14:07:10 UTC

APM is rather non SMP safe (eg the words "SMP" or "multiprocessor" don't even
exist in the specification). However for poweroff you can make an exception:

to the line with vmlinuz in it in /etc/grub/grub.conf
and you override the SMP check for apm. This is not done by default because
several bioses get it wrong and do Bad Things(tm).

Comment 3 Ivo Sarak 2002-03-27 14:31:59 UTC
I think this is the case ofBad Things(tm):

apm: disabled - APM is not SMP safe (power off active)
is last message before hang.

Comment 4 Arjan van de Ven 2002-03-27 14:45:57 UTC
Might be a good plan to check for a bios upgrade ;)

Comment 5 Ivo Sarak 2002-03-28 16:22:46 UTC
I have installed the latest BIOS (1005d) to this board, but with no change.

Comment 6 John Bage 2002-07-02 20:50:23 UTC
I am having the same problem using KDE and Grub on RedHat Linux 7.3. I have 
even tried to do all the updates and even a complete reinstall of it but with 
no luck. It still continues to do this. I have also tried the bigmem, smp, and 
the regular kernels and the same problem still continues.

Comment 7 Adam Cowell 2002-08-20 01:35:51 UTC
I am now having this problem with Redhat 7.3 after one of the updates up2date
got.  It worked fine previously. Its a single CPU system and a Asus motherboard
a (A7V133). /sbin/shutdown -h now works fine though.

Comment 8 Alan Cox 2003-06-05 17:39:04 UTC
The AMD dual CPU doesn't support poweroff (APM isnt specified for SMP)

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