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#1 2009-12-12 14:38:30
- sant527
- Member
- Registered: 2009-06-21
- Posts: 273
powernowd cpu making noise when start some application
When I start some application my cpu is making noise. Is this because of powernowd.
I recently started using powernowd. Below is the default settings.
powernowd: PowerNow Daemon v1.00, (c) 2003-2008 John Clemens
powernowd: Found 2 scalable units: -- 1 'CPU' per scalable unit
powernowd: cpu0: 800Mhz - 2401Mhz (4 steps)
powernowd: cpu1: 800Mhz - 2401Mhz (4 steps)
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#2 2009-12-12 16:28:44
- MadTux
- Member
- Registered: 2009-09-20
- Posts: 553
Re: powernowd cpu making noise when start some application
Are you sure your CPU makes the noise. I've never heard that CPU's make any noise. Isn't it rather the fan which makes the noise? That could very well be the case, since powernowd is intended to adjust cpu frequency scaling, i. e. reduce cpu threshold if it is not needed. If you then start an application, the cpu may be forced into a higher threshold, which produces heat, so that the fans have to kick in in order to reduce cpu temperature.
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#3 2009-12-13 14:59:33
- sant527
- Member
- Registered: 2009-06-21
- Posts: 273
Re: powernowd cpu making noise when start some application
Yes you may be right. So it is the fan making noise because of forced into a higher threshold. Is it harmful or not harmful to my computer.
How to stop powernowd and reset to previous condition.
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#4 2009-12-13 15:00:54
- graysky
- Wiki Maintainer
- From: :wq
- Registered: 2008-12-01
- Posts: 10,597
- Website
Re: powernowd cpu making noise when start some application
how did you start powernowd?
CPU-optimized Linux-ck packages @ Repo-ck • AUR packages • Zsh and other configs
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#5 2009-12-13 16:58:52
- MadTux
- Member
- Registered: 2009-09-20
- Posts: 553
Re: powernowd cpu making noise when start some application
If the CPU is forced into a higher threshold and the fans making noise because of this, it wouldn't be harmful. On the other hand, the noise should reduce after some time if the CPU threshold is reduced. Another thing you might want to verify is that there is no dust inside your laptop case or sitting on the fans. The fans then would have to do more work than necessary and thus running for longer and causing more noise.
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