Testing it on a Sony Vaio VGN-SR21M Wakeups from idle per second have generally dropped from 150 - 200 to a 50 - 100 range.
Linux VGN-SR21M 2.6.38-9-generic #43lp760131v201106060906 SMP Mon Jun 6 08:27:00 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Cn Avg residency P-states (frequenze) C0 (cpu occupata) ( 1,1%) Modalità turbo 0,1% polling 0,0ms ( 0,0%) 2,27 Ghz 0,0% C1 mwait 0,1ms ( 0,0%) 1,60 Ghz 0,0% C2 mwait 0,1ms ( 0,0%) 800 Mhz 99,9% C4 mwait 11,5ms (98,9%) Wakeups da idle per secondo : 86,7 interval: 15,0s Energia utilizzata (stima ACPI): 15,5W (1,1 ore) (long term: 18,8W,/0,9h) Cause principali di wakeup: 34,5% ( 36,9) [extra timer interrupt] 18,5% ( 19,7) desktopcouch-se 13,6% ( 14,5) [radeon] <interrupt> 9,4% ( 10,0) kworker/0:0 0,0% ( 0,0)D rs:main Q:Reg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/760131 Title: Power consumption raised significantly in natty -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs