Bob Crandell wrote:
> I think we have that same P4 and it works for me too. I have a
> client with a dual 233. It's never worked with that. I was hoping
> that the kernel had progressed enough to be able to power it off
> also. Maybe 2.6.1?
Ah. The new motherboards that support P4C's also support ACPI.
Recent 2.4 kernels support power control through ACPI, even w/ SMP.
Your client's old motherboard wouldn't have ACPI.
If you look at /usr/src/linux/arch/i386/kernel/apm.c, you'll see
this comment. (I'm looking at vanilla 2.4.21.)
/*
* See Documentation/Config.help for the configuration options.
*
* Various options can be changed at boot time as follows:
* (We allow underscores for compatibility with the modules code)
* apm=on/off enable/disable APM
* [no-]allow[-_]ints allow interrupts during BIOS calls
* [no-]broken[-_]psr BIOS has a broken GetPowerStatus call
* [no-]realmode[-_]power[-_]off switch to real mode before
* powering off
* [no-]debug log some debugging messages
* [no-]power[-_]off power off on shutdown
* [no-]smp Use apm even on an SMP box
* bounce[-_]interval=<n> number of ticks to ignore suspend
* bounces
* idle[-_]threshold=<n> System idle percentage above which to
* make APM BIOS idle calls. Set it to
* 100 to disable.
* idle[-_]period=<n> Period (in 1/100s of a second) over
* which the idle percentage is
* calculated.
*/
There are some other comments in that file worth reading, too.
I don't have access to a pre-ACPI SMP motherboard anymore, so I can't
try this. It looks, from a cursory reading of the code in that file,
like you should boot with apm=smp,power-off or
apm=smp,power-off,realmode-power-off.
If apm is a module, you can pass the right options in when you load
it.
# insmod apm power_off=1 smp=1
or
# insmod apm power_off=1 smp=1 realmode_power_off=1
> The coffee hasn't kicked in yet so I'm having trouble the English
> language.
You should do what I do. Until you've finished your morning coffee,
compose all your email in classical Latin. (-:
--
Bob Miller K<bob>
kbobsoft software consulting
http://kbobsoft.com [EMAIL PROTECTED]
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