Re: Laptop Mode
Am Montag, 13. September 2004 08:50 schrieb Frank Murphy:
> On Sunday 12 September 2004 9:01, Matthias Grimm wrote:
> > Am Sonntag, 12. September 2004 17:28 schrieb Bryan Forbes:
> > > > 3. It suggests pbuttonsd, but what does pbuttonsd offer that pmud
> > > > doesn't offer in regards to laptop mode utilities?
> > Nothing. The laptop-mode-tools recommend a power management daemon. This
> > could be apmd or acpid or pmud or pbbuttonsd. It's up to you.
> What are the differences among these tools? It seems odd that there are
> four competing tools to do the same thing. Is one of them better than the
You need one of them depending on your hardware:
APM - for laptops with an APM bios (APM = Advanced Power Management). Mostly
used on x86 machines. Ancient system. will not be used on newer machines.
ACPI - this is the successor of APM on x86 machines. It is much more powerfull
and power management is only a part of the specification. This might also be
used on other architectures than x86 in future.
pmud - power management daemon for Apple powerbooks (powerpc architecture). It
controlls basic functions like sleep, reaction on closed lid and emergency
shutdown at low batteries.
pbbuttonsd - this daemon works also on powerpc machines and try to support the
full range of power management from dimming the display if idle, over spin
down the hard disk to different suspend modes. Battery supervision and
emergency shutdown are also included as support for most of Apple specific
hardware and hotkeys.
You may find each of the daemons on freshmeat.net if you like a more