[Bug 41292] New: scaling_min_freq reverts to cpuinfo_min_freq after wake up

[Bug 41292] New: scaling_min_freq reverts to cpuinfo_min_freq after wake up

[bugzilla-daemon]

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: cpufreq@vger.kernel.org
        ReportedBy: bill.longman@gmail.com
        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

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=41292





--- Comment #1 from Bill Longman <bill.longman@gmail.com>  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

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=41292


Zhang Rui <rui.zhang@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |NEEDINFO
                 CC|                            |rui.zhang@intel.com




--- Comment #2 from Zhang Rui <rui.zhang@intel.com>  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

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=41292





--- Comment #3 from Bill Longman <bill.longman@gmail.com>  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

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=41292


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alan@lxorguk.ukuu.org.uk
         AssignedTo|cpufreq@vger.kernel.org     |rjw@sisk.pl




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