Bug 8631

Summary:	Table has invalid signature AE_BAD_SIGNATURE
Product:	ACPI	Reporter:	pmenier (pmenier)
Component:	Config-Tables	Assignee:	Zhang Rui (rui.zhang)
Status:	CLOSED INVALID
Severity:	normal	CC:	acpi-bugzilla
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.21.5	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	config used to compil kernel result of cat /proc/acpi/dsdt > dsdt && iasl -d dsdt complete dmesg Acpidump

Description pmenier 2007-06-15 04:15:55 UTC

Most recent kernel where this bug did not occur:2.6.21
Distribution:Debian ETCH
Hardware Environment:P4 805 Dual Core
Software Environment:Debian etch
Problem Description:
I got this error since kernel-2.6.21 in dmesg : 

input: Power Button (FF) as /class/input/input0
ACPI: Power Button (FF) [PWRF]
input: Power Button (CM) as /class/input/input1
ACPI: Power Button (CM) [PWRB]
ACPI Warning (tbutils-0158): Incorrect checksum in table [  ^Eð] -  00, should be 4B [20070126]
ACPI Error (tbinstal-0134): Table has invalid signature [  ^Eð], must be SSDT or PSDT [20070126]
ACPI Error (psparse-0537): Method parse/execution failed [\_PR_.CPU1._PDC] (Node c213c89c), AE_BAD_SIGNATURE
ACPI: Processor [CPU1] (supports 8 throttling states)
ACPI Warning (tbutils-0158): Incorrect checksum in table [  ^Eð] -  00, should be 4B [20070126]
ACPI Error (tbinstal-0134): Table has invalid signature [  ^Eð], must be SSDT or PSDT [20070126]
ACPI Error (psparse-0537): Method parse/execution failed [\_PR_.CPU2._PDC] (Node c213c7fc), AE_BAD_SIGNATURE
ACPI: Processor [CPU2] (supports 8 throttling states)
Real Time Clock Driver v1.12ac

The complete dmesg is here :
http://webpmenier.dynalias.net/docext/noyau/26215/dmesg


Steps to reproduce: it just appears at boot.

Comment 1 pmenier 2007-06-16 12:13:49 UTC

Created attachment 11765 [details]
config used to compil kernel

Comment 2 pmenier 2007-06-16 12:20:51 UTC

Created attachment 11766 [details]
result of cat /proc/acpi/dsdt > dsdt && iasl -d dsdt

Comment 3 pmenier 2007-06-16 12:22:59 UTC

Created attachment 11767 [details]
complete dmesg

Comment 4 Zhang Rui 2007-06-18 00:54:01 UTC

Hmmm, there are dynamic tables with invalid signature.
It should be a BIOS bug.
Please check if there is any BIOS update first.

Comment 5 Zhang Rui 2007-07-05 18:45:30 UTC

Please attach the acpidump output. :)

Comment 6 pmenier 2007-07-06 02:49:37 UTC

Created attachment 11963 [details]
Acpidump

Here is the file made by acpidump > acpidump.
When i launch the acpidump command, it replies :
Wrong checksum for generic table!

Comment 7 Len Brown 2007-07-13 10:33:14 UTC

Linux version 2.6.21.5-vs2.2.0-rc1 (root@srvweb)...
...
ACPI: DSDT 7FFD0440, 4978 (r1  1AAAA 1AAAA000        0 INTL  2002026)
...
ACPI: Table DSDT replaced by host OS
ACPI: DSDT 00000000, 46CA (r1  1AAAA 1AAAA000        0 INTL 20060912)

please re-open this bug if you still have the problem when
you run the firmware that came with the machine.