https://bugzilla.kernel.org/show_bug.cgi?id=15886
Summary: acpi_idle: Very idle Core i7 machine never enters C6
Product: ACPI
Version: 2.5
Kernel Version: 2.6.34-rc5
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Processor
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected], [email protected]
Regression: No
Created an attachment (id=26188)
--> (https://bugzilla.kernel.org/attachment.cgi?id=26188)
ACPI dump from GA-P55M-UD4
As discussed on the mailing list. Jeff and I both have systems where an idle
Core i7 spends almost no time in C6 (C3 as reported by powertop).
In my case, it's a gigabyte GA-P55M-UD4 and Jeff's is some Dell motherboard.
Matthew Garrett pointed out the following, seemingly ignored, patch as a
logical solution to the problem and it does indeed appear to work.
http://lkml.org/lkml/2009/11/10/23
(Patchwork seems to have mangled the patch in question so I didn't link to it)
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