Re: [patch] PM: suspend/resume debugging should depend on SOFTWARE_SUSPEND

Matthew Garrett
2006-11-21T02:03:17Z

On Mon, Nov 20, 2006 at 05:17:56PM -0500, Theodore Tso wrote:

> If someone has a suggestion for how I can save the power state of all
> of the various components in my laptop so that the laptop cna be
> brought back to the 18W state after a suspend-to-ram, I'm all ears....

A good start might be to compare the PCI configuration registers before
and after suspend. However, I suspect it's more complicated than that.
Are you using the closed ATI drivers? If so, it's possible that they do
something at X startup that they're not doing on resume. A good
comparison might be to see if the power consumption is dramatically
different over suspend/resume if you only boot to text mode - that is,
never start X at all.

--
Matthew Garrett | mjg59@srcf.ucam.org