Re: ACPI failures on Dell Latitude E6220

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Juliusz Chroboczek wrote:

>>> [  227.525937] ACPI Exception: AE_TIME, Returned by Handler for [EmbeddedControl] (20110623/evregion-478)
>>> [  227.525946] ACPI Error: Method parse/execution failed [\_SB_.PCI0.LPCB.ECDV.ECR1] (Node ffff880128e7a3d0), AE_TIME (20110623/psparse-536)
>>> [  227.525957] ACPI Error: Method parse/execution failed [\ECRB] (Node ffff880128e7a268), AE_TIME (20110623/psparse-536)
>
> This appears to be fixed, or at least worked around, by Debian's kernel
> 3.1.5-1.  My idle battery time doubled (yay!).  Turbostat indicates that
> the CPU is now entering the higher-numbered "PC" states, which it wasn't
> doing beforehand.

Thanks for the update.  Am I right in guessing that 3.1.4-1 is broken,
too, and that with 3.1.5-1 the ACPI exceptions are gone?  Could you
attach "dmesg" output from booting a fixed kernel for reference?

>From a quick glance, none of the fixes introduced by 3.1.5-1 seems to
explain this change in an obvious way.  Glad to hear the new kernel is
working well, though.

Curious,
Jonathan
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