linux-kernel - Re: 2.6.20-rc3 regression: suspend to RAM broken on Mac mini Core Duo

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Date:	Fri, 12 Jan 2007 14:50:25 +0000
From:	Pavel Machek <pavel@....cz>
To:	Luming Yu <luming.yu@...il.com>, Adrian Bunk <bunk@...sta.de>,
	Lee Revell <rlrevell@...-job.com>, linux-kernel@...r.kernel.org
Subject: Re: 2.6.20-rc3 regression: suspend to RAM broken on Mac mini Core Duo

Hi!

> > >> > It didn't. It looks like it is unusable, becuase it isn't reliable in
> > >> > 2.6.20-rc3.
> > >>
> > >> Is this issue still present in -rc4?
> > >
> > >I used 2.6.20-rc4 in single user mode, and applied 2 patches from
> > >netdev to get wake on LAN support. This way I was able to set up an
> > >automatic suspend/resume loop. It looked good, but after e.g. 20
> > >minutes, the resume hang. So it is reproduceable with 2.6.20-rc4.
> > >Unfortunately, I can not test the same with 2.6.18, as the wake on LAN
> > >patches need 2.6.20-rc.
> > 
> > Hmm, do you mean this is the first time of this kind of testing?
> > Is this issue related to LAN driver?
> > I guess you should be able to set up an automatic suspend/resume loop
> > with /proc/acpi/alarm, and test similar with 2.6.18.
> 
> Thanks for the hint. I just used /proc/acpi/alarm to set up a
> suspend/resume loop and did ca. 100 cycles in a row with 2.6.18.2 in
> single user mode, without a failure.

Can you do similar test on 2.6.20 -- w/o network driver loaded (and
generaly minimum drivers?)
							Pavel

-- 
Thanks for all the (sleeping) penguins.
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