Download your favorite Linux distribution at LQ ISO.
Go Back > Forums > Linux Forums > Linux - Laptop and Netbook
User Name
Linux - Laptop and Netbook Having a problem installing or configuring Linux on your laptop? Need help running Linux on your netbook? This forum is for you. This forum is for any topics relating to Linux and either traditional laptops or netbooks (such as the Asus EEE PC, Everex CloudBook or MSI Wind).


  Search this Thread
Old 11-02-2005, 08:23 PM   #1
Registered: Feb 2003
Distribution: Slackware 10.2
Posts: 61

Rep: Reputation: 15
Amilo A1650 frequency scaling

I have a Fujitsu-Siemens Amilo A1650 with athlon-64 3400+.
I run on it slackware 10.2 (which is working great!) and winblowzXP. I only use windows for internet because I cant make my wireless card work on slack.

I have a question. I have noticed that the cpu is changing speeds in windows (800MHz, 1.6GHz and 2.2GHz).
But in slack every time i check cpuinfo (from /proc) it says that the speed of the cpu is 800MHZno matter the cpu utilization at that time.

Thanks in advance.

Last edited by Ravendark; 11-02-2005 at 08:25 PM.
Old 11-04-2005, 03:48 AM   #2
Registered: Nov 2004
Location: Turku, Finland
Distribution: Debian, Ubuntu, Gentoo
Posts: 388

Rep: Reputation: 30
I have never used AMD 64 processors, but I suppose Cpu Frequency Scaling should work on it like on any other CPU.

Make sure you have kernel support for CFS enabled. Note that 2.4 kernels do not include support for it.

find /lib/modules/yourkernelversion -name "cpufreq_userspace.ko"

If this module is found, then all should be ok. Next make sure you have appropriate CFS daemon installed. I prefer "powernowd", because it is the simplest. There are others which you can try, for example "cpudynd" and "cpufreqd", but they are not as simple.

Also check you BIOS settings. Some laptops have defaults options for the CPU frequency. Even if you can't make real Linux CFS to work, you might be able to set the default to 2.2Ghz from BIOS. When you need long battery life, you could switch that default to 800Mhz temporarily.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Amilo A1650 Wireless Problems greppinFunk Linux - Laptop and Netbook 7 01-13-2007 02:31 PM
Amilo A1650 and slackware 10.1 problems Ravendark Linux - Laptop and Netbook 1 09-28-2005 09:23 AM
CPU frequency scaling (Mandriva 2005 LE) spookymulder825 Linux - Laptop and Netbook 1 06-18-2005 09:55 PM
cpu frequency scaling....anyone? alaios Linux - General 3 06-07-2005 11:51 AM
CPU frequency scaling on Pentium M Khang Linux - Laptop and Netbook 2 03-23-2005 07:16 PM > Forums > Linux Forums > Linux - Laptop and Netbook

All times are GMT -5. The time now is 02:31 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration