linux-kernel - Re: 2.6.21-rc1: T60 resume from suspend to RAM issues

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Message-ID: <20070227102809.GD10548@mellanox.co.il>
Date:	Tue, 27 Feb 2007 12:28:09 +0200
From:	"Michael S. Tsirkin" <mst@...lanox.co.il>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, bunk@...sta.de, pavel@...e.cz,
	linux-pm@...ux-foundation.org, linux-acpi@...r.kernel.org,
	len.brown@...el.com, mingo@...hat.com
Subject: Re: 2.6.21-rc1: T60 resume from suspend to RAM issues

> Quoting Ingo Molnar <mingo@...e.hu>:
> Subject: Re: 2.6.21-rc1: T60 resume from suspend to RAM issues
> 
> 
> * Michael S. Tsirkin <mst@...lanox.co.il> wrote:
> 
> > > > 2. As a separate test, I enabled DynTicks in .config. Seems to 
> > > > work fine but won't come out of suspend to memory at all: pressing 
> > > > Fn/F4 seems to have no effect.
> > > 
> > > Do you believe that the second problem was caused by dynticks?
> > 
> > Assuming these are 2 different problems, yes, the second one seems to 
> > be caused by dyntics.
> 
> on my T60 current -git does not resume even without dynticks. v2.6.20 
> with the same .config resumes fine (except for the display).
> 
> after pressing Fn/F4 the disk light flashes briefly, which suggests that 
> action is probably back to the Linux kernel at that point, and that we 
> hung somewhere there. Will try a bisection thing.

That's exactly the behaviour I have with DynTicks: the disk light flashes
briefly.

-- 
MST
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