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2.6.21-rc1: more ACPI errors (EC__)

DISCUSSION Meelis Roos 3 participants 4 messages Feb 27, 2007 – Mar 8, 2007 ACPI

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Meelis Roos

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#0 lore raw

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

Signature · 1 line
Meelis Roos ([email protected])
#1 lore raw

This exception appears to be originating somewhere in the EC driver:

ACPI Exception (evregion-0420): AE_NOT_FOUND, Returned by Handler for [EmbeddedControl] [20070126]

Quoted 7 lines

-----Original Message-----
From: [email protected] [mailto:linux-acpi- [email protected]] On Behalf Of Meelis Roos
Sent: Tuesday, February 27, 2007 12:50 PM
To: Linux Kernel list; [email protected]
Subject: 2.6.21-rc1: more ACPI errors (EC__)

Quoted 8 lines

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

Quoted 10 lines

[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]

Quoted 4 lines

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

Quoted 7 lines

these messages, temporarily available at
http://www.cs.ut.ee/~mroos/x20-shutdown-acpi-errors.jpg

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Quoted 2 lines

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#2 lore raw
In reply to Meelis Roos
Quoted 4 lines · Meelis Roos

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:

Quoted 10 lines

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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#3 lore raw
Quoted 1 line

please take a look at 8066 bug and patches there.

Tried patch from #9 there (with 21-rc3) and it seems to cure the problem for me (with IBM X20). Thanks!

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Meelis Roos ([email protected])