New: scaling_min_freq reverts to cpuinfo_min_freq after wake up
https://bugzilla.kernel.org/show_bug.cgi?id=41292
Summary: scaling_min_freq reverts to cpuinfo_min_freq after
wake up
Product: Power Management
Version: 2.5
Kernel Version: 2.6.39
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: cpufreq
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No
Environment: Core i7 M620; ondemand; acpi-cpufreq; microcode/version == 0xc
Description: When I set scaling_min_freq on all cores, only cpu0 retains its value after awaking from suspend-to-ram. All other cores revert to the minimum frequency.
Expected behaviour: Cores would retain scaling_min_freq after waking.
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[Bug 41292] scaling_min_freq reverts to cpuinfo_min_freq after wake up
https://bugzilla.kernel.org/show_bug.cgi?id=41292
--- Comment #1 from Bill Longman <[email protected]> 2011-08-17 16:15:19 --- Created an attachment (id=69062)
--> (https://bugzilla.kernel.org/attachment.cgi?id=69062)
dmesg output
Snippet of dmesg at sleep/wake border.
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[Bug 41292] scaling_min_freq reverts to cpuinfo_min_freq after wake up
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=41292
Zhang Rui <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |NEEDINFO
CC| |[email protected]--- Comment #2 from Zhang Rui <[email protected]> 2012-01-18 05:34:22 --- It's great that the kernel bugzilla is back.
Can you please verify if the problem still exists in the latest upstream kernel?
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[Bug 41292] scaling_min_freq reverts to cpuinfo_min_freq after wake up
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=41292
--- Comment #3 from Bill Longman <[email protected]> 2012-02-09 23:10:13 --- On 3.2.5, all the cores >0 have scaling_min_freq at cpuinfo_min_freq.
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[Bug 41292] scaling_min_freq reverts to cpuinfo_min_freq after wake up
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=41292
Alan <[email protected]> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |[email protected] AssignedTo|[email protected] |[email protected]
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