-----Original Message----- From: Chris Pemberton <cjpembo@gmail.com> To: crux@lists.crux.nu Date: Wed, 07 Nov 2007 08:58:17 -0600 Subject: Re: Linux and ACPI for Lenovo. not specific to crux
Hi all
I was wondering if any of you guys have a lenovo notebook running
fernanbolando wrote: linux.
I recently bought a lenovo, to replace my very old toshiba. The toshiba had allowed me to set most of the power management stuff through the BIOS so I simply enabled only the very basic ACPI in my kernel.
Now the lenovo's BIOS is not very extensive. Now I need help understanding, what options to enable in my kernel or can I just
trust
the BIOS that it is actually doing the right power management?
I just want the notebook to run as long and as cool as possible. I mostly connect to a plan9 for most of the cpu extensive stuff so running the system hot is not necessary to get the best performance.
Can sombody suggest which ACPI options to activate in the kernel ( example: cpu scalling, etc ) A starting point would be great, because I have ignored most of the ACPI stuff for so long that I dont know were to start.
thanks Fernan
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Here is the config for kernel 2.6.22.6 on my Lenovo 3000 N100 laptop:
I also use the following:
echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor echo 1 > /sys/devices/system/cpu/sched_mc_power_savings
Read Intel's documents regarding Enhanced Intel Speedstep:
http://softwarecommunity.intel.com/articles/eng/1611.htm
Good luck and your mileage may vary...
Chris
I got my ACPI going. thanks for all the help. As it turns out I can only use p4_clockmod because my new laptop has only a celeron M. I am able to slow it down, But I am not really sure if it is really lowering the temp. Other than feeling sluggish and clumsy when I drive the clock, I am not really sure how check. On going monitoring. Fernan