Messages in this thread | | | Date | Wed, 20 Feb 2008 09:28:54 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: 2.6.25-rc2 System no longer powers off after suspend-to-disk. Screen becomes green. |
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On Thu, 21 Feb 2008, Jeff Chua wrote: > > After inserting "return 0;" right at the top of those two functions, suspend > (and power-off properly), and resume (without green screen) works just fine. > > I would like to know what they're for.
Try suspend-and-resume without X.
Also, try it on one of the more modern laptops - even *with* X.
Basically, the kernel wants to be able to do what X does, because it means that when it works, it works _so_ much better than doing it in X. So getting it working is definitely worth it.
That said, before you do anything else, try if suspend-to-RAM works.
That's the primary goal for this code anyway, and if it works that gives a good hint. Suspend-to-disk is fundamentally different, and it's entirely possible that for the suspend-to-disk case we should just say "screw trying to suspend/resume graphics", since you'll have the BIOS resuming text-mode anyway, and there are no performance or debugging advantages.
Linus
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