Re: 3.19-rc1 errors when opening LID

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On Friday 26 December 2014 16:12:49 Rafael J. Wysocki wrote:
> On Wednesday, December 24, 2014 07:51:48 PM Pali Rohár wrote:
> > --nextPart5943893.pKyMBm5Emp
> > Content-Type: Text/Plain;
> > 
> >   charset="utf-8"
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> > Content-Transfer-Encoding: quoted-printable
> > 
> > Hello!
> > 
> > With new 3.19-rc1 kernel every time when I open LID on my
> > laptop, kernel pr=
> 
> > ints these error lines to dmesg:
> Does your syste suspend when the lid is closed and resume when
> it is open?
> 

No, I disabled all autosuspend and autohibernate settings. When I 
close LID system is running.

> 
> > [25568.448566] acpi MSFT1111:00: Cannot transition to power
> > state D3cold fo= r parent in (unknown)
> > [25568.448572] acpi INT33C2:00: Cannot transition to non-D0
> > state from D3 [25568.448577] acpi MSFT0002:00: Cannot
> > transition to power state D3cold fo= r parent in (unknown)
> > [25568.448581] acpi ELAN1010:00: Cannot transition to power
> > state D3cold fo= r parent in (unknown)
> > [25568.448587] acpi INT33C3:00: Cannot transition to non-D0
> > state from D3 [25568.448590] acpi INT33C0:00: Cannot
> > transition to non-D0 state from D3 [25568.448594] acpi
> > INT33C1:00: Cannot transition to non-D0 state from D3
> > [25568.448598] acpi INT33C4:00: Cannot transition to non-D0
> > state from D3 [25568.448602] acpi INT33C5:00: Cannot
> > transition to non-D0 state from D3 [25568.448623] acpi
> > device:41: Cannot transition to power state D3cold for =
> > parent in (unknown)
> > [25568.448627] acpi INT33C6:00: Cannot transition to non-D0
> > state from D3
> 
> All of the above mean that power transitions were not carried
> out for some devices, because they were in unexpected power
> states to start with.
> 
> They are devices on the Intel LPSS as far as I can say (CCing
> Mika and Andy).
> 

Just to note: all above acpi devices do not exist in 3.13 kernel, 
at least I do not see them in /sys/bus/acpi/.

> > [25568.448890] pci_bus 0000:01: Allocating resources
> > [25568.448905] i915 0000:00:02.0: BAR 6: [??? 0x00000000
> > flags 0x2] has bog= us alignment
> > [25568.449064] i915 0000:00:02.0: BAR 6: [??? 0x00000000
> > flags 0x2] has bog= us alignment
> > [25568.449472] i915 0000:00:02.0: BAR 6: [??? 0x00000000
> > flags 0x2] has bog= us alignment
> > 
> > With older kernel (3.13) I do not see these errors, so it is
> > regression.
> 
> It only is a regression if it leads to functional problems. 
> Do you see any?
> 

Ok. I do not see functional problems, but I see above messages in 
dmesg log every time when I open LID.

> > Ca=n you look at it? If it is needed, I can provide other
> > logs, ACPI/DSTD dump= s, etc.
> 
> It looks like 3.13 didn't try to use some devices that are now
> used in 3.19-rc1 and something doesn't work entirely as
> expected.

-- 
Pali Rohár
pali.rohar@xxxxxxxxx

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