Thanks for these.  I was able to get it to work with
suspend-to-disk, which is nice since I can
book up OSX or Windows, then return to my saved Linux
session.   I had to add this to the end of /etc/hibernate/hibernate.conf:


   ProcSetting extra_pages_allowance 7500

this was suggested on a gentoo forum to get around a problem
with suspending when the fglrx module is loaded. 

It takes about 30 seconds to resume from suspend-to-disk (my 
MacBook Pro has 2GB RAM). 

Also, suspend-to-ram (option 3) does not work reliably unless I
*explicitly* remove certain modules before calling the hibernate
script. If I don't do that, it suspends and resumes perfectly (and
quickly) the first time (using method 3 in hibernate.conf).  But the
next time I try to suspend/resume it shuts down and I have to reboot.
Then it tries to resume from suspend and resumes but freezes.

--------------------

A quick followup -- I now have suspend-to-ram (via suspend2)
working reliable on my 2Ghz MBP with 2GB RAM.  Some comments.

On Tue, 09 May 2006 12:33:36 -0700, Michael Kaufmann <michael@enlighter.de> wrote:
> * It works only if you unload the sky2 module before suspending.

In my experience this means you explicitly "modprobe -r sky2" before
even calling the hibernate script!  The hibernate script is also
supposed to remove that module, but for some reason with suspend-to-ram
at least, it's *crucial* that you do it before calling that script
(at least on my laptop).  Otherwise suspend-to-ram works the first
time but never again (until you power cycle the machine).

> * It works even with the fglrx driver and 3d hardware acceleration.

Yep, and *very* nice. 

> * the button events don't work anymore (module "button" loads, detects
> lid, power and sleep button) but the events do never occur.

Same for me. 

> * It wakes up after opening (or closing) the display or pressing the
> power button.

Yes.  The above makes it sound like it wakes up if you close the lid
after suspending with the lid open.  That is not the case (for me). 
For it wakes up only when I open the lid or press power.  Pressing
keys does not resume (thankfully). 

> * It takes about 5-10 seconds to hibernate and the same time to wakeup
> (STR).

I just timed it and my machine takes about 30 seconds to hibernate 
and 5-10  seconds to wake up from Suspend-to-RAM.  Mine perhaps 
takes longer to hibernate since I have 2GB RAM.

William