Re: No events when pressing power button

[Arndt Schoenewald <abs-SA7OhAOe25xnNxvc45mVi0K323yFvGpRdefyYXQ/eNw@public.gmane.org>]

Hi Andy,

nice to hear you're back from vacation! (Hum, well, not quite as nice
for yourself, I guess...!)

On Tue, Aug 13, 2002 at 11:33:56AM -0700, Grover, Andrew wrote:
> > From: Sérgio Monteiro Basto [mailto:sergiomb-5ng0By4jB+/QUPosyRRdSA@public.gmane.org] 
> > > I patched my kernel (2.4.18) today with latest version of 
> > acpi-patch 
> > > (acpi-20020726-2.4.18.diff). My power button gets detected 
> > but I dont get 
> > > any events from it. I have a ABit BP6 with dual celeron processors.
> > > ACPI: Power Button (FF) [PWRF]
> > > What could be wrong? I tried latest acpid rpm and 'cat 
> > /proc/acpi/event' 
> > > without results. Acpid doesn't write nothing to 
> > /var/log/acpid when I 
> > > press power button. 
> > > 
> > had you try kacpid patch 
> > that detects lost acpi events
> 
> Hi,
> 
> The problem *may* be that the ACPI interrupt is not being set to active-low,
> level-triggered properly (we do this for PCI irqs but not our own ;-)
> 
> Is your acpi interrupt shared with any PCI devices? If the above hypothesis
> is true, the answer should be "no".
> 

AHA!

I own one of those machines that need eisa_set_level_irq() for some
builtin devices, and I have never seen any events coming out of
/var/log/acpid so far. The ACPI interrupt is not shared with anything.

So I really guess you are right and eisa_set_level_irq(9) might be
needed to turn ACPI interrupt reporting on. I'll add this call next
time I build a kernel.

Arndt

> I don't know about people's comfort level with the code, but you might try
> adding a call to eisa_set_level_irq(<ACPI irq #>) and seeing if that gets
> interrupts happening properly. kacpid should not be necessary but obviously
> until SCIs work 100% it remains useful for some people.
> 
> Regards -- Andy


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