processor underclocks itself after installing bea/bianca

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nick
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processor underclocks itself after installing bea/bianca

Post by nick »

Hi Timmy
The clock speed of my AMD 3.8 sits at a reading
of 1.2Ghz in Linux when I am just surfing, but if I
start editing Videos or Burnining CDs it goes to the correct speed, it is controlled by POWER NOW, (Cool and Quiet) i.e. the speed is supplied when required.
http://www.amd.com/us-en/Processors/Pro ... 964,00.htm
You will have to cut and paste link as the ^ seems to cause problems!
Looks like your Bios may possibly be staying at the previously used setting in Linux.
Do not know anything about windows but is there a "power now or cool and quite" option to
install in windows?
Or, there is a way to turn off Power Now Linux and then the processor may reboot at the correct speed in windows, or may be it still needs power now installed windows
Will try to find how to disable Power Now In Linux.
Nick
Last edited by LockBot on Wed Dec 28, 2022 7:16 am, edited 1 time in total.
Reason: Topic automatically closed 6 months after creation. New replies are no longer allowed.
nick
Level 5
Level 5
Posts: 684
Joined: Sat Dec 02, 2006 8:04 am

processor underclocks itself after installing bea/bianca

Post by nick »

Hi Timmy
To see if your processor supports frequency scaling try
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
on my Sempron 3.4 box I get:
2000000 1800000 1000000 which means
that the above frequencies (in Hz) are supported by my CPU, and…
$cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
gives:
userspace powersave ondemand conservative performance
http://ubuntu.wordpress.com/2005/11/04/ ... y-scaling/
nick
Level 5
Level 5
Posts: 684
Joined: Sat Dec 02, 2006 8:04 am

processor underclocks itself after installing bea/bianca

Post by nick »

Hi Timmy again
If I type "powernow=off" in linux processor goes to full speed
And maybe if you download the file:
PowerNow! Dashboard Installation files.zip
on the page
http://www.amd.com/us-en/Processors/Pro ... 64,00.html
You maybe able to set the speed in XP, cannot test as I do not have Widows
Nick
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