The patch which is being discussed seems to be this one:
commit 7467571f4480b273007517b26297c07154c73924
Author: Tero Kristo <[email protected]>
Date: Thu Feb 24 17:19:23 2011 +0200
cpuidle: menu: fixed wrapping timers at 4.294 seconds
Cpuidle menu governor is using u32 as a temporary datatype for storing
nanosecond values which wrap around at 4.294 seconds. This causes errors
in predicted sleep times resulting in higher than should be C state
selection and increased power consumption. This also breaks cpuidle
state residency statistics.
cc: [email protected] # .32.x through .39.x
Signed-off-by: Tero Kristo <[email protected]>
Signed-off-by: Len Brown <[email protected]>
This patch seems to be in 2.6.38.8 and 2.6.39.1 stable updates which
should be included in official kernels in the next few weeks.
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https://bugs.launchpad.net/bugs/760131
Title:
Power consumption raised significantly in natty
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