Shutdown Issue

midnytblu · 07-31-2008, 01:31 AM

hi,

we're having a problem on one of our RH 7.2 machines whenever we shut it down.

upon issuing the command "shutdown -h now", the actual process of shutting down begins but after the line "Power Down." appears, it won't automatically shut off. Instead, we have to manually push the power button to shut it down.

is there a way to fix it to power down without manual intervention?

thanks in advance!

/no1

kenoshi · 07-31-2008, 03:01 AM

If:

poweroff

or

shutdown -h -P now

or (my favorite)

sync
sync
init 0

Doesn't poweroff your box, you need to check if the kernel has acpi support compiled in.

Sorry, my memory of 7.2 is sketchy at best, its been a looong time, hope this helps.

midnytblu · 07-31-2008, 09:03 PM

hi kenoshi,

thanks for replying but can you teach me how to do that or link me to how can i do it?
again, much thanks.

onebuck · 07-31-2008, 10:27 PM

Hi,

'man shutdown';

Code:

excerpt from 'man shutdown';

NAME
       shutdown - bring the system down

SYNOPSIS
       /sbin/shutdown [-t sec] [-arkhncfFHP] time [warning-message]

DESCRIPTION
       shutdown  brings  the system down in a secure way.  All logged-in users
       are notified that the system is going down, and  login(1)  is  blocked.
       It is possible to shut the system down immediately or after a specified
       delay.  All processes are first notified that the system is going  down
       by the signal SIGTERM.  This gives programs like vi(1) the time to save
       the file being edited, mail and news processing programs  a  chance  to
       exit  cleanly,  etc.   shutdown  does  its  job  by signalling the init
       process, asking it to change the runlevel.  Runlevel 0 is used to  halt
       the  system, runlevel 6 is used to reboot the system, and runlevel 1 is
       used to put to system into a state where administrative  tasks  can  be
       performed; this is the default if neither the -h or -r flag is given to
       shutdown.  To see which actions are taken on halt  or  reboot  see  the
       appropriate entries for these runlevels in the file /etc/inittab.

OPTIONS
       -a     Use /etc/shutdown.allow.

       -t sec Tell  init(8)  to wait sec seconds between sending processes the
              warning and the kill signal, before  changing  to  another  run-
              level.

       -k     Don't  really shutdown; only send the warning messages to every-
              body.

       -r     Reboot after shutdown.

       -h     Halt or poweroff after shutdown.

       -H     Halt action is to halt or drop into boot monitor on systems that
              support it.

       -P     Halt action is to turn off the power.

       -n     [DEPRECATED]  Don't  call  init(8)  to do the shutdown but do it
              ourself.  The use of this option is discouraged, and its results
              are not always what you'd expect.
-f     Skip fsck on reboot.

       -F     Force fsck on reboot.

       -c     Cancel  an  already  running shutdown. With this option it is of
              course not possible to give the time argument, but you can enter
              a  explanatory  message on the command line that will be sent to
              all users.

       time   When to shutdown.

       warning-message
              Message to send to all users.

       The time argument can have different formats.   First,  it  can  be  an
       absolute time in the format hh:mm, in which hh is the hour (1 or 2 dig-
       its) and mm is the minute of the hour (in two digits).  Second, it  can
       be  in the format +m, in which m is the number of minutes to wait.  The
       word now is an alias for +0.

...

Easy enough to figure the proper shutdown command.

midnytblu · 07-31-2008, 11:33 PM

hi onebuck,

sorry, what i meant was how to:

Quote:

Originally Posted by kenoshi

...check if the kernel has acpi support compiled in...

we use 'shutdown -h now' to power down the system but it won't power off automatically... it stops at the 'Power Down.' message.

thanks.

onebuck · 07-31-2008, 11:45 PM

Hi,

Code:

~# cat /usr/src/linux/.config |grep -i acpi

How I would check my current 'linux' kernel.

Or do a 'dmesg |grep -i acpi' to see the present setup

BTW, what happens when you do a 'shutdown -r now'?

midnytblu · 08-01-2008, 12:42 AM

hi onebuck,

big thanks for that! unfortunately, i can't perform what you requested because the system has just been transferred to another location. i won't be able to do it 'til monday next week.

i'll get back at you once i saw the result. again, much thanks!

onebuck · 08-01-2008, 01:09 AM

Hi,

The reasoning behind the issue of the 'shutdown -r now' is too see if the kernel is handling the shutdown. The reboot (-r) should issue the message and init a boot. If it doesn't then we know that the power management is not functioning or setup properly.