Second CPU core loses frequency scaling on resume
Bug #192300 reported by
none
This bug report is a duplicate of:
Bug #183033: Intel Core 2 Duo - Resume from suspend, CPU Frequency Scaling is gone on CPU1.
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Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
New
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Undecided
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Unassigned |
Bug Description
Binary package hint: linux-source-2.6.24
I recently installed Hardy Alpha 4 on my Inspiron 1420 Intel Dual Core machine.
Resume from suspend-to-ram, works fine for the most part except that the second CPU core loses frequency scaling (and goes to maximum frequency):
# find /sys/ -iname \*cpufreq\*
/sys/devices/
/sys/module/
/sys/module/
/sys/module/
/sys/module/
/sys/module/
/sys/module/
Note the absence of /sys/devices/
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I see now that the absence of /sys/devices/ system/ cpu/cpu1/ cpufreq is a red herring - that's not there on the first boot either, when the frequency on the second core does scale correctly. I'll look into this some more...