power-off on shutdown (SMP)

castor_fou · Posted: Sun Jul 20, 2003 12:54 pm Post subject: power-off on shutdown (SMP)

hi,

My machine does not power off even though I passed the apm=power-off
command-line option. I have acpi and apm enabled.

here is my grub.conf entry :

viperlin · Veteran Joined: 15 Apr 2003 Posts: 1319 Location: UK

sorry can't help but i just got my laptop to poweroff with that grub kernel option, thanks!

jlg · Posted: Sun Jul 20, 2003 2:53 pm Post subject:

Compile your kernel with acpi only and select system under acpi bus manger. apm will make your system do weird things with smp so don't compile it in the kernel.

castor_fou · Posted: Sun Jul 20, 2003 4:59 pm Post subject:

are you sure i can power-off my machine with acpi only ?

Xargon · Posted: Sun Jul 20, 2003 5:20 pm Post subject:

You can if your machine is complient with ACPI. Mine is not (Dell Latitude C600) so I exclusively use APM. With APM, be sure to disable SMP and enable "APM Shutdown" in your kernel.
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castor_fou · Posted: Sun Jul 20, 2003 8:30 pm Post subject:

ok but if i disable SMP, my kernel could use both cpus ?

viperlin · Veteran Joined: 15 Apr 2003 Posts: 1319 Location: UK

if you have 2 CPU's then disabling SMP will also disable the 2nd CPU.

i have 1 CPU but SMP is enabled in my kernel (vanilla 2.4.20 with bootsplash patches and loop-AES module)

just make sure "APM Shutdown" is enabled in your kernel and then we'll see.

castor_fou · Posted: Sun Jul 20, 2003 9:06 pm Post subject:

ok i have down some tests and it is now working just as i wanted to.

here is my grub kernel entry :