ThinkPad support

[Adrian Chadd]

Please update to the latest -HEAD and re-try. We found some issues
with the suspend path and which device was being checked when deciding
what power state to enter.



-adrian


On 13 November 2014 14:04, Eric McCorkle <eric at metricspace.net> wrote:
> On 09/17/2014 06:09, Ian Smith wrote:
>>
>> On Tue, 16 Sep 2014 22:38:35 +0100, isdtor wrote:
>>
>> [.. I can't comment on your devd issue/s ..]
>>
>>   > Sep 16 21:48:23 host kernel: pci0: failed to set ACPI power state D2
>> on
>>   > \_SB_.PCI0.EXP1: AE_BAD_PARAMETER
>>
>> This appears to be common to all Thinkpads for the last 6 years or so,
>> when booting with verbose messages. This message is emitted late on the
>> suspend path, and seems to indicate some device that has advertised D2
>> as an available state, where D2 isn't apparently really supported.
>
>
> Chiming in late here...
>
> I see this on mine.  I had thought it was the source of some problems, but I
> traced examined ACPI debugging traces (at a very high debugging level), and
> found that it doesn't seem to be causing any problems.  The ACPI methods
> execute and finish without errors.
>
>
>>
>> On the resume path, not much later in the messages sequence, you should
>> see power being set back to D0 state, successfully.  Perhaps - as in the
>> case of my X200 - twice in a row, for devices \_SB_.PCI0.EXP0 thru .EXP3
>>
>> I don't know if this failure means that the device was left in D0 state
>> (run) or in D3 state (off) when power was removed in S3 suspend state.
>>
>> I never have been able to connect the dots between these .EXPn devices
>> and particular PCI devices in dmesg.  So far they appear to be harmless.
>>
>> cheers, Ian
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