Re: [gpm] gnome-power-manger-2.26.0 suspend and hibernate

[Victor Lowther <victor lowther gmail com>]

Chris Vine wrote:
> On Mon, 23 Mar 2009 14:47:54 +0000
> Richard Hughes <hughsient gmail com> wrote:
> > On Mon, 2009-03-23 at 01:07 +0000, Chris Vine wrote:
> > > How do gpm-2.26/DeviceKit-power do it - do they invoke
> > > the /sys/power/state kernel interface directly?)
> > No, it invokes pm-suspend and pm-hibernate. If you need to do things
> > at suspend and resume time you need to write a standard hook in
> > pm-utils, rather than hack at the HAL script.
> >
> > Richard.
>
> Richard,
>
> That's a shame, because pm-utils do not play very well with my laptop
> for some reason.  I can hibernate once with pm-hibernate, but then it
> refuses to hibernate again (it ignores further hibernation requests)
> for a reason it does not trouble itself to log.

Hi, pm-utils maintainer here.  What version of pm-utils are you using?

> I have my own scripts which unload any modules required and then
> invoke the kernel interface, and that works fine.  I can hibernate and
> suspend as many times as I like that way.  Since I do not set the
> HIBERNATE_MODE environmental variable pm-utils should work similarly,
> but for some reason it does not.

If you need to unload modules across a suspend/resume or hibernate/thaw, 
you can have pm-utils unload them using the SUSPEND_MODULES parameter -- 
just drop a file in /etc/pm/config.d with the line 
SUSPEND_MODULES="problematic modules", and pm-utils will unload and 
reload them across suspend/hibernate.  Which modules are you having to 
unload to make things work?

Also, what is the HIBERNATE_MODE environment variable?

> If I wanted to change the hard wiring of gnome-power-manager to pm-utils
> for my own private use, what would I need to patch - is this in
> gnome-power-manager or DeviceKit-power?

Hmmm... among other things, pm-utils is intended to be an abstraction 
layer that higher-level code can call without having to worry about 
whatever bizzare workarounds any given machine requires to sleep and 
wake back up.

> Chris
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