Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

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 
share|improve this question
up vote 1 down vote accepted

I fixed this by upgrading to Ubuntu 11+

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .