I have a Dell Mini 10v and managed to get good results with Natty
(11.04) after some fiddling around. It's better than any other version I
had till now (I have been following this bug since its beginning!).
Without wireless I get 20ms C3 state, and with wireless one around 3ms
C3 state (with no applications running, and not touching the keyboard or
touchpad). The machine doesn't get hot (the mini 10v is fanless, high
temperature is easy to detect).
-I have disabled Unity, although I dont think Unity itself is the cause of
wakeups
-Compiz generates a lot of wakeups on the GPU, so I removed all the features
that I dont use and kept only the ones I use
-Installed the latest intel GPU driver from ppa (the Mini 10v has the i915)
-Disabled the SD-Card reader (using 'rmmod usb_storage') which was generating
extra wakeups (I re-enable it when I want to insert a card).
Even though the situation is better now, I'm sure there is many other
things that can be improved in the kernel to reduce the wakeup further,
say to get 30ms C3 when the wireless is on, or to reduce the wakeups
when the touchpad is used.
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/524281
Title:
Tens of wakes per second in [kernel scheduler] Load balancing tick
on Core 2 Duo even with only 1 core enabled
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