Re: 2.6.19-rc5: grub is much slower resuming from suspend-to-disk than in 2.6.18

From: Andrey Borzenkov
Date: Sun Nov 12 2006 - 22:44:51 EST


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On Sunday 12 November 2006 17:55, Pavel Machek wrote:
> On Sun 12-11-06 14:36:41, Andrey Borzenkov wrote:
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> > This is rather funny; in 2.6.19-rc5 grub is *really* slow loading kernel
> > when I switch on the system after suspend to disk. Actually, after kernel
> > has been loaded, the whole resuming (up to the point I have usable
> > desktop again) takes about three time less than the process of loading
> > kernel + initrd. During loading disk LED is constantly lit. This almost
> > looks like kernel leaves HDD in some strange state, although I always
> > assumed HDD/IDE is completely reinitialized in this case.
>
> Seems like broken hw, really. No state should survive machine
> poweroff.
>

Well, we do have NVRAM do not we?

> Is it notebook?
>

Yes.

> Can you try to unplug system for a few minutes / unplug battery if
> notebook to see if it helps?

No. I unplugged power, removed battery and left it over night. Today morning
it has shown exactly the same behavior upon resuming (well, upon power-on
after suspend to disk :))

To recap - this never happens upon simple power off; I do not remember this to
happen upon suspend to disk until 2.6.19 (I won't claim it never happened,
just that I do not remember it). This happens consistently in 2.6.19-rc5. I
am very curious which hardware issue may have such pattern. And in any case
this does smell like regression (earlier version not triggering this HW issue
if any)

- -andrey
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