https://bugzilla.kernel.org/show_bug.cgi?id=12389





--- Comment #18 from Thomas Renninger <tr...@suse.de>  2010-11-10 20:12:35 ---
Ok, there is CPPC function wich probably means "Change" PPC in CPU0IST table.
But this one is only called via _PCT which is only called at cpufreq driver
load time.
So I have no idea how _PPC gets modified when this magic button is hit, when
switching to battery or anywhen after boot up.
Can you verify that when the CPU is limited, that you see this limit here:
cat /sys/devices/system/cpu/cpu0/cpufreq/bios_limit
Do you know about any Clevo or related platform specific driver you may have
running?
I may miss something..., I looked at drivers/platform/x86/* whether a driver
directly modifies VPPC or calls CPPC func, but couldn't find anything.
I am stuck here.

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