registry team mailing list archive

[Richard Kleeman <kleeman@xxxxxxxxxxxx>]

I would also agree that this really needs fixing. I have tried a large
range of kernels now ranging from 2.6.31 through to 2.6.35 (maverick
kernel) and compared wakeups using powertop. The only sensitivity in
this list is that the earliest kernel (Karmic kernel 2.6.31) shows half
the wakeups of all the other kernels. Such a result is consistent with
the many reports above of a halving of battery life between Karmic and
Lucid.

 I also note that this issue was raised on the kernel mailing list in
April and May and a patch was suggested but there was no follow up. Note
that this is also a Debian bug as well. My strong suspicion is that this
is a basic problem with the kernel and switching to another distro would
not help. If this is not the case I would welcome evidence that another
distro with a kernel in the range 2.6.32-2.6.35 DOES NOT have this
issue.

If it is an upstream kernel problem I think that someone needs to lodge
a critical bug on the kernel bugzilla.

-- 
Tens of wakes per second in "[kernel scheduler] Load balancing tick" on Core 2 Duo even with only 1 core enabled
https://bugs.launchpad.net/bugs/524281
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