http://bugzilla.kernel.org/show_bug.cgi?id=9353
Summary: acpi-cpufreq doesn't work M31EI dual-core Centrino
notebook
Product: ACPI
Version: 2.5
KernelVersion: 2.6.22-14-generic
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Processor
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Most recent kernel where this bug did not occur: 2.6.17? (Edgy and early
Feistys)
Distribution: Ubuntu
Hardware Environment: Uniwill M31EI (Intel T2400)
Software Environment:
Problem Description:
The M31EI is a dual-core Centrino notebook designed by Uniwill, no Elitegroup
[1]. CPU scaling worked on Ubuntu 6.06 (and early 6.10) kernels (2.6.17?),
which appearently used the old speedstep-centrino module.
Now with 7.10 neither speedstep-centrino nor acpi-cpufreq work. Both modules
complain "No such device". Problem seems to be - like usual - in the ACPI
tables:
[ 20.938328] ACPI Warning (tbutils-0217): Incorrect checksum in table [
�] - 00, should be 05 [20070126]
[ 20.938369] ACPI Error (tbinstal-0134): Table has invalid signature [
�], must be SSDT, PSDT or OEMx [20070126]
[ 20.938405] ACPI Error (psparse-0551): Method parse/execution failed
[\_PR_.CPU1._PDC] (Node df802180), AE_BAD_SIGNATURE
[ 21.142856] ACPI Warning (tbutils-0217): Incorrect checksum in table [
�] - 00, should be 05 [20070126]
[ 21.142895] ACPI Error (tbinstal-0134): Table has invalid signature [
�], must be SSDT, PSDT or OEMx [20070126]
[ 21.142929] ACPI Error (psparse-0551): Method parse/execution failed
[\_PR_.CPU2._PDC] (Node df802240), AE_BAD_SIGNATURE
[1]
http://www.ecs.com.tw/ECSWebSite/Products/ProductsDetail.aspx?detailid=774&DetailName=Bios&MenuID=57&LanID=0
Steps to reproduce:
modprobe acpi-cpufreq
modprobe speedstep-centrino
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