RE: [ACPI] General Linux PM architecture question

[Grover, A. <and...@in...>]

> From: Luis Fernando Pollo [mailto:po...@in...] 
> I'd like to know if there's any kind of notification of power 
> management
> events for user-space applications. Something similar to the driver
> interface specified in /usr/src/linux/include/linux/pm.h...
> 
> It seems very unlikely that developers would have overlooked that much
> needed feature, but I can't find information on anything that 
> resembles that
> kind of support anywhere. I've browsed around but haven't had 
> any luck.
> 
> Any thoughts?

Yes. ospmd and libpower.

Things are currently broken, but the intention is that interested
applications (xscreensaver? presentation apps? power applets?) register with
libpower, and can both receive notifications when a PM event happens, as
well as being able to make requests. For example, a presentation app would
be able to request that no screen blanking occur. libpower abstracts the
given PM interface (APM, ACPI, or something else) from the applications.

Regards -- Andy