ACPI and SMP conflict

valkyrite · Apprentice Joined: 19 Sep 2002 Posts: 241

Hi all,

I have problem in using SMP and ACPI simultaneously in the kernel.

Configuration of my comp is P4 3.0 GHz 865GBF mbd with HT support.

If I enable HT support in the kernel and also ACPI support in the kernel. Kernel hangs at boot. Removing SMP support works just fine. What I understand from my limited knowledge of linux is that enabling SMP automatically enables APIC (helpful in case of multiprocessor systems) which has some issues with ACPI and so the system hangs at boot.

I really need ACPI since I cannot manually poweroff 36 cpus everytime, I shutdown my system (tiny cluster). Therefore I have currently removed support for SMP from the kernel.

How can I have both ACPI and SMP working at the same time and without any problems.

I am using gentoo-dev-sources-2.6.7-r11.

TIA

--Tiwaris

jido · n00b Joined: 27 May 2004 Posts: 40 Location: London

Do you really need ACPI--
You tried powering off with just APM :?:

_________________
-- Denis.

dsd · Posted: Thu Nov 18, 2004 9:45 pm Post subject:

try a newer kernel. ACPI progresses fairly rapidly.
_________________
http://dev.gentoo.org/~dsd

valkyrite · Apprentice Joined: 19 Sep 2002 Posts: 241

Thanks for the replies.

I can use APM. I tried it but it did not work (No power off).

With APM: is it normal that even after getting power down message on the screen, some simple commands like ls, pwd cd etc. still work? because I checked it after giving "shutdown -h now" and my pc was still working. Is there some other problem with the kernel configuration.

--
Tiwaris