Re: Battery alarm -> was General Questions:

[Rich Townsend <rhdt-OBnUx95tOyn10jlvfTC4gA@public.gmane.org>]

Rockefeller, Harry wrote:

<snip>

> 
> My notebook, Uniwill N351S1, is - supposedly - both APM and ACPI 2.0
> supported.  Would something as important as battery alarm simply not
> be implemented in ACPI?

Certainly. Many manufacturers have broken ACPI implementations; as far 
as they're concerned, if it works with Windows, then it "works". It's 
probably the case that Windows polls the battery, rather than relying on 
the alarm, so that broken implementations will still function.

> FWIW, /proc/acpi/battery/BAT0/info gives both design capacity warning
> and low data.

These are fixed (non-settable) quantities, that have little to do with 
the alarm.

> 
> A 'grep BTP dsdt.dsl' turns up:      BTP0,     16,

But no _BTP, which means no alarm.

> 
> Can I modify dsdt.dsl to add this ACPI function myself?

In principle, yes. If you like, I can have a look at your DSDT to see 
how easy it would be to add in _BTP.

cheers,

Rich


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