After Ubuntu upgrade (some time ago, from rather ancient version), my Lenovo S10 netbook fan does not stop.
$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 10.10 Release: 10.10 Codename: maverick $ uname -a Linux agladysh-s10 2.6.35-23-generic #41-Ubuntu SMP Wed Nov 24 10:18:49 UTC 2010 i686 GNU/Linux
PowerTop reports high number of [kernel scheduler] Load balancing tick wakeups.
I remember reading somewhere that this is a known issue in recent kernels.
Any advice?
PowerTOP version 1.13 (C) 2007 Intel Corporation
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 2.7%) 1.60 Ghz 2.4%
polling 0.0ms ( 0.0%) 1333 Mhz 0.0%
C1 mwait 23.6ms (41.5%) 1067 Mhz 0.0%
C2 mwait 1.5ms ( 7.5%) 800 Mhz 97.6%
C4 mwait 1.4ms (48.3%)
Wakeups-from-idle per second : 403.7 interval: 1.2s
no ACPI power usage estimate available
Top causes for wakeups:
32.1% ( 70.0) [kernel scheduler] Load balancing tick
17.0% ( 37.0) [ehci_hcd:usb1, uhci_hcd:usb2]
11.5% ( 25.0) USB device 1-5 : USB2.0-CRW (Generic)
10.1% ( 22.0) [acpi]
Q - Quit R - Refresh
