Re: [Xen-devel] Resume not working on 2nd gen Core i5

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Feb 24, 2012 at 05:03:28PM +0100, Marek Marczykowski wrote:
> On 24.02.2012 06:54, Konrad Rzeszutek Wilk wrote:
> >>>>>>> Does anybody have a similar problem on 2nd Gen Core i5? Any advises 
> >>>>>>> how
> >>>>>>> to approach debugging it?
> >>>>>>>
> > .. snip..
> >> (the same hardware)
> >> On 2.6.38.3 xenlinux kernel after resume there is screen content from 
> >> before
> >> suspend, power led light constantly (as it should), but system is
> >> irresponsible (no capslock led, no reaction to sysrq, network etc).
> >> On 3.x with your patches system goes into S3, but on resume is even worse 
> >> - no
> >> screen content at all (and no backlight) and also irresponsible, power led
> >> still blinking. As 3.x tried:
> >>  - your devel/acpi-s3.v7 branch directly
> >>  - 3.2.7 merged with devel/acpi-s3.v7
> >>  - 3.3-rc4 with devel/acpi-s3.v7
> > 
> > OK. That is weird - it worked for me last time. One thing at at time then -
> > try doing this from text-mode, so no graphic mode involved. For that you 
> > might
> > need to disable your i915 driver altogether. Then just run 'pm-suspend' and
> > see where it stops.
> > 
> > The next part is... Wait a minute, this reminds me of something I 
> > encountered
> > with a SandyBrige i2100 - the suspend would work, but resume would get 
> > stuck.
> > 
> > The issue was with the hypervisor and if I had the acpi-cpufreq drivers 
> > loaded
> > it resumed just fine. If I didn't - so hypervisor had no idea about C 
> > states or
> > P states, it would be stuck in the default_idle and never come back.
> > 
> > So you might want for fun try also using the stable/processor-passthru.v5 
> > and
> > build it with CONFIG_XEN_PROCESSOR_PASSTHRU=y.
> 
> Looks much better. At least for few suspend/resume it works. Thanks!
> And: when is it planned to upstream above patches (acpi-s3 and
> processor-passthru)?

Been doing it, but haven't gotten the required Acks.

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