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BrummieJim
l33t
Joined: 22 Jul 2005
Posts: 683
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 Posted: Tue Jun 28, 2011 7:54 am Post subject: Frequency Scaling on Core2Duo |
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Hello,
My frequency scaling works fine but everytime I start my machine up I have to set the policy in the gnome applet, rather than it being set from the word go. This used to work, but I'm wondering if anyone had any ideas how to diagnose and fix this?
Thanks,
Jim |
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whig
l33t
Joined: 27 Nov 2004
Posts: 973
Location: New Zealand
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| Posted: Tue Jun 28, 2011 8:11 am Post subject: |
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Load the cpu scaling modules, and put cpufrequtils in the default run level - eg with openrc, rc-update add cpufrequtils default
Edit /etc/conf.d/cpufrequtils to suit. |
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wuzzerd
Guru
Joined: 05 Jan 2005
Posts: 467
Location: New Mexico
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| Posted: Wed Jun 29, 2011 2:32 pm Post subject: |
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| The default governor can be set in the kernel configuration. |
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Jaglover
Watchman
Joined: 29 May 2005
Posts: 8291
Location: Saint Amant, Acadiana
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| Posted: Wed Jun 29, 2011 2:42 pm Post subject: |
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Yes, setting ondemand as default in kernel configuration works fine.
However, my motherboard has some sort of automatic OC option (Core2Duo), when I enable this option kernel frequency drivers won't work any more. If someone knows how this automatic OC works I'd be all ears. Is it safe to enable? Will it do the same work as kernel driver, i.e. lower the frequency if no grunt is needed?
_________________
My Gentoo installation notes.
Please learn how to denote units correctly! |
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BrummieJim
l33t
Joined: 22 Jul 2005
Posts: 683
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| Posted: Wed Jun 29, 2011 3:26 pm Post subject: |
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| Thanks, think I'd got muddled with the types of cpu demon. All working nicely now, thanks! |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Wed Jun 29, 2011 4:30 pm Post subject: |
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| Jaglover wrote: | Yes, setting ondemand as default in kernel configuration works fine.
However, my motherboard has some sort of automatic OC option (Core2Duo), when I enable this option kernel frequency drivers won't work any more. If someone knows how this automatic OC works I'd be all ears. Is it safe to enable? Will it do the same work as kernel driver, i.e. lower the frequency if no grunt is needed? |
cpufreq is automatic underclocking. Rapidly changing frequencies in an overclocked chip will kill it through thermal stresses, so the BIOS disables it for you. |
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Kernel & Hardware
