Re: adaptive keyboard off after suspend on linux kernel 4.4 and 4.5, (thinkpad x1 gen2)

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On Wed, 27 Jan 2016, Sindre Fjogstad wrote:
> After upgrading my kernel to version 4.4 and then 4.5.RC1 from 4.2 my
> adaptive keyboard is off when the laptop wakes up after suspend. The
> adaptive keyboard works as expected before the suspend.

Suspend to RAM, or hibernation (suspend to disk) ?

> How do you want me to debug this and what kind of information do you
> need for me to provide you?
> 
> from dmesg:
> [   11.181209] thinkpad_acpi: ThinkPad ACPI Extras v0.25
> [   11.181212] thinkpad_acpi: http://ibm-acpi.sf.net/
> [   11.181214] thinkpad_acpi: ThinkPad BIOS GRET37WW (1.14 ), EC unknown
> [   11.181215] thinkpad_acpi: Lenovo ThinkPad X1 Carbon 2nd, model 20A8S0WT16
> 
> I have attached my kern.log filtered for acpi which contains hints on
> additional issues:
>  - unhandled HKEY event 0x60c0
>  - unknown version of the HKEY interface: 0x200

Those are known harmless conditions, and HKEY 0x200 interface *is* the
adaptative keyboard version of the HKEY event interface, but it is only
"partially" known...

And as you can see, it apparently still has some rough edges ;-)

I will need your help to fix this, I don't have any thinkpad with an
adaptative keyboard to test.  In fact, the adaptative keyboard code was a
contribution by Bastien Nocera.  Added him to the CC.

Bastien, can you help debug this issue?

-- 
  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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