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Topic: linux-phc - undervolting patch for kernel in DSLN?< Next Oldest | Next Newest >
ruserious Offline





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Posted: April 08 2007,21:36 QUOTE

Hi there,

i was wondering, if there is any chance that the linux-phc patch can make it's way into DSL-N? I like to use DSL-N from a usb stick on my notebook when surfing, since I can power off the hdd and enjoy complete noiselesness. This would be even nicer if I could undervolt my Pentium M 740. On Ubuntu (which is the main OS), I have a custom kernel with linux-phc patch and the temperature is around 7-8 °C lower with undervolting, which makes quite a difference with respect to how often (or rather if at all) the fan runs.

It's a relatively small patch, too:
https://www.dedigentoo.org/trac/linux-phc/

If that's not an option - where can I start reading on how to use my custom kernel with DSL-N?
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Juanito Offline





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Posted: April 09 2007,03:45 QUOTE

According to the link you supplied, the oldest kernel patched is 2.6.15 - DSL-N is 2.6.12 so it's not obvious that this patch would work.

Have you tried cpufreqd - extension in the DSL-N repository - this will slow the cpu down and thus use the fan less. The cpufreq_combo extension also contains laptop-mode-tools which will power down your hd automatically.

You could try reading these posts (albeit for DSL) for ideas on how to patch the DSL-N kernel - dummy compile, patching 2.4.26 for cpufreqd
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ruserious Offline





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Posted: April 09 2007,10:15 QUOTE

Quote (Juanito @ April 08 2007,23:45)

Quote
DSL-N is 2.6.12


Oops, I totally missed this critical piece of information.

Quote
Have you tried cpufreqd - extension in the DSL-N repository - this will slow the cpu down and thus use the fan less. The cpufreq_combo extension also contains laptop-mode-tools which will power down your hd automatically.


Those are all great, and indeed they help a lot in achieving the desired goal.
(Though ability to undervolt would still be a nice feature, in case DSL-N does future kernel upgrades)


Thanks for the links, I will take a look. :)
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^thehatsrule^ Offline





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Posted: April 09 2007,13:24 QUOTE

Re: undervolting:
Can't you manually set the voltage in the BIOS?  Unless you need changing on-the-fly this should be "good enough"...
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ruserious Offline





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Posted: April 10 2007,14:17 QUOTE

Quote (^thehatsrule^ @ April 09 2007,09:24)
Re: undervolting:
Can't you manually set the voltage in the BIOS?  Unless you need changing on-the-fly this should be "good enough"...

No, I can't. I am not aware of any Notebooks where that is possible, but then I haven't seen all that many notebook BIOS menus... ;)
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4 replies since April 08 2007,21:36 < Next Oldest | Next Newest >

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