linux-kernel - Re: 2.6.21-rc1: more ACPI errors (EC_

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Date:	Sun, 04 Mar 2007 13:31:31 +0300
From:	Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>
To:	Meelis Roos <mroos@...ux.ee>
CC:	Linux Kernel list <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org
Subject: Re: 2.6.21-rc1: more ACPI errors (EC__)

Meelis Roos wrote:
> I tested 2.6.21-rc1 on my laptop (IBM X20 with 440BX) and found two 
> problems:
>
> First, a seemingly harmless one - ACPI error messages during bootup:
>
> ACPI Exception (evregion-0420): AE_NOT_FOUND, Returned by Handler for [EmbeddedControl] [20070126]
> ACPI Exception (dswexec-0462): AE_NOT_FOUND, While resolving operands for [OpcodeName unavailable] [20070126]
> ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.ISA_.EC__.BAT0._STA] (Node d3c435e0), AE_NOT_FOUND
> ACPI Exception (evregion-0420): AE_NOT_FOUND, Returned by Handler for [EmbeddedControl] [20070126]
> ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.ISA_.EC__.AC__._PSR] (Node d3c43540), AE_NOT_FOUND
> ACPI Exception (ac-0095): AE_NOT_FOUND, Error reading AC Adapter state [20070126]
>
> And second, there were ACPI error messages about EC__ during shutdown. 
> These messages appeared, then the "acpi_power_off called" message 
> appeared, then it waited for about 5 seconds (this does not happen 
> normally) and then it succeeded shutting down. Captured a screenshot of 
> these messages, temporarily available at 
> http://www.cs.ut.ee/~mroos/x20-shutdown-acpi-errors.jpg
>
>   
please take a look at 8066 bug and patches there.

regards,
    alex
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