Re: [Devil-linux-develop] [0.6Beta1] One more bug to report...

[Heiko Z. <he...@zu...>]

Bruce Smith wrote:
>>>Let's think about this a little harder.  Are other power management
>>>features going to cause us problems?  Causing a PC to go into sleep mode
>>>would be bad.  We need to be really careful on what features we select.
>>>
>>>Can we turn on just the power off feature?
>>
>>I definitely don't want any harddisk spin-downs, or sleep modes.
> 
> 
> Right.
> 
> 
>>Don't you need a special daemon which puts the PC into sleep mode?
> 
> 
> I don't think so.  I think it's done with the kernel & the BIOS.
> 
> On my Redhat system, where HDD spin-down work, I have a process:
> root         3     1  0 Aug08 ?        00:00:00 [kapmd]
> 
> But there is no binary for kapmd, so I think it's a kernel process.

They write in the Kernel config, that nothing like this happens.
E.g. for HDD spindown, you have to specify this via the hdparm program.
On the other hand, when somebody has enabled it in the BIOS -> disable it.


>>Lets see if there's a program where we can turn that stuff off during 
>>system bootup.
> 
> 
> I haven't looked for a long time, but there used to be a lot of
> selections you could make in the kernel config about what worked.
> 
> I'm starting to wonder if this is a bad idea to turn on.
> Especially since APM is being replaced with ACPI, and Linux 
> currently has poor support for ACPI.

I turned on only APM, ACPI is not well enough supported yet.

cya
   Heiko