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From: Nate Lawson <nate@root.org>
To: "Michael W. Oliver" <michael@gargantuan.com>
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Date: Wed, 6 Aug 2003 07:27:19 -0700
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Subject: [acpi-jp 2555] Re: cvs commit: src/sys/dev/acpica acpi_ec.c
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On Sun, 3 Aug 2003, Michael W. Oliver wrote:
> +--- On Wednesday, July 30, 2003 16:46,
> | Nate Lawson proclaimed:
> | On Wed, 30 Jul 2003, Michael W. Oliver wrote:
> | > | While I see a large max delay (21 ms), I don't see any errors.  Do
> | > | you get any errors of AE_NO_HARDWARE_RESPONSE?
>
> FYI, I snipped this from my periodic run from this morning:

Does that mean your system was under heavy load?  The ATA driver (and most
other disk drivers) hold Giant and so heavy interrupt load can cause
immense latency.

> acpi_ec0: info: new max delay is 51000 us
> acpi_ec0: EcRead: Failed waiting for EC to send data.
>
> ACPI-0438: *** Error: Handler for [EmbeddedControl] returned
> AE_NO_HARDWARE_RESPONSE
>
> ACPI-1287: *** Error: Method execution failed [\\_SB_.BAT0._STA] (Node
> 0xc2cb6700), AE_NO_HARDWARE_RESPONSE
>
> ACPI-0175: *** Error: Method execution failed [\\_SB_.BAT0._STA] (Node
> 0xc2cb6700), AE_NO_HARDWARE_RESPONSE
>
> These are the only errors that I have seen since I sent you the first batch
> of data on Wednesday.  If you need more information about my setup, please
> let me know.  Thanks much!

When the system is not under heavy load, have you gotten any errors like
that?  Does ACPI work ok for you overall (batt status, etc.)?

-Nate
