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Groups > comp.os.linux.hardware > #2288

Re: Running desktop cool and silent

Newsgroups comp.os.linux.hardware
Date 2014-04-08 18:53 -0700
References <7cc646cc-8abe-4d78-ae55-dc1caa959fa5@googlegroups.com> <53444144$0$297$14726298@news.sunsite.dk>
Message-ID <296bd243-d0ee-45d3-b301-4fa4eb9faef3@googlegroups.com> (permalink)
Subject Re: Running desktop cool and silent
From rusi <rustompmody@gmail.com>

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On Wednesday, April 9, 2014 12:04:44 AM UTC+5:30, Henrik Carlqvist wrote:
> On Tue, 08 Apr 2014 06:19:04 -0700, rusi wrote:
> > Now this suggests that this cpu should be able to run at 2.4 as well as
> > 3 GHz However I am unable to set it to 2.4 GHz

> What does "cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor" say?

> I use the following startup script myself to get CPU frequencies adapted 
> to load:

> -8<---------------------
> /sbin/modprobe acpi-cpufreq
> /sbin/modprobe cpufreq_ondemand
> find /sys/devices/system/cpu -name scaling_governor -exec \
>                               sh -c 'echo ondemand > {}' \;
> -8<---------------------

> However, you might want to try other values than ondemand as you don't 
> want the CPU frequency to rise at load.

[In dir /sys/devices/system/cpu/cpu1/cpufreq]
I find

# cat scaling_available_governors 
userspace conservative powersave ondemand performance 

Ok so trying to set the governor...

# cat scaling_governor 
ondemand
# echo userspace > scaling_governor 
# cat scaling_governor
userspace

So I can change that. However...

# echo 2400000 > scaling_max_freq 
bash: echo: write error: Invalid argument

Even though
# cat scaling_available_frequencies 
3000000 2400000 

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Thread

Running desktop cool and silent rusi <rustompmody@gmail.com> - 2014-04-08 06:19 -0700
  Re: Running desktop cool and silent Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2014-04-08 18:34 +0000
    Re: Running desktop cool and silent rusi <rustompmody@gmail.com> - 2014-04-08 18:53 -0700
      Re: Running desktop cool and silent rusi <rustompmody@gmail.com> - 2014-04-08 21:45 -0700
      Re: Running desktop cool and silent Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2014-04-09 06:22 +0000
        Re: Running desktop cool and silent rusi <rustompmody@gmail.com> - 2014-04-09 09:47 -0700
  Re: Running desktop cool and silent buck <buck@private.mil> - 2014-04-08 19:56 +0000
    Re: Running desktop cool and silent buck <buck@private.mil> - 2014-04-09 19:35 +0000

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