Power management in lucid lynx 10.04

[wanna_try]

thanks, It works, notebook makes less noise, but in windows it was noiseless.
I suppose may be any tools to make fan slowly?

[ubunterooster]

try

sudo apt-get computer temp

Then "add to panel" computer temperature monitor.
It may, *may*, show you temps. This will help figure out if the problem is heat. I actually have very little knowledge of fans so I wish you all the best and hope someone else can help here
edit, get also: sudo apt-get ksensors

[wanna_try]

not working

[sripplinger]

I just barely installed Kubuntu 10.04 on my laptop and the fans were running constantly. Once I installed the ATI fglrx drivers this changed. I'm not sure if this was coincidental or it the graphics drivers are helping things run cooler now. Just a thought in case this helps.

[lidex]

Since Lucid 10.04 laptop-mode-tools is deprecated and conflicts with standard packages.

To manually activate laptop-mode type:

sudo laptop_mode start

however this will only last until next reboot.

Laptop mode is disabled by default in Ubuntu. To enable it open terminal shell and type:

sudo gedit /etc/default/acpi-support

At the bottom of the file, there is ENABLE_LAPTOP_MODE variable, set this to true. A restart is required to enable this setting.

Read through this file to see some of the other options.

Ensure you have laptop-mode-tools installed:

sudo apt-get install laptop-mode-tools laptop-detect

Linux can use different power management profiles called “governors.” By default, Ubuntu does not allow you to change which governor it uses, however you can enable the option with one command:

sudo dpkg-reconfigure gnome-applets

After that, make sure you have the “CPU Frequency Monitor” applet running in your Gnome panel. Right click on the applet and go to the Preferences. Under “Frequency Selector” section, make sure the “Show menu” is selected on “Frequencies and Governors.”

Then you can left click on the applet and from here, choose which governors or frequencies to use.

You can change this via the command line without having to enable anything. Just go to /sys/devices/system/cpu/cpu0/cpufreq/ (if you have multiple processors/cores/hyperthreading change cpu0 to cpu1, cpu2, etc. for each cpu you have listed) and edit the file (use sudo) “scaling_governor”, just change the governor that is listed to whatever governor you want to use. Available governors are listed in “scaling_avail_governors”

man laptop-mode.conf

and edit /etc/laptop-mode/laptop-mode.conf

Consider installing also powertop which could easily help you reducing energy consumption by analyzing actual energy wasts and give you useful tips on how to save.

sudo apt-get install powertop

Also see this page:
http://linux.aldeby.org/linux-laptop...omization.html

[sripplinger]

Interesting. What exactly is this 'laptop mode' supposed to do? On my laptop (running lucid) things seem to be running pretty well. For instance, my speakers turn off when I plug in the headphones, which I thought was a laptop only feature (that I had to manually enable in previous versions). I guess I'm just curious what I might be missing.

[screaminj3sus]

afaik laptop-mode mainly deals with spinning down hard disks when they are idle, its disabled by default because there has been problems with that feature in the past.

[sripplinger]

Okay, thanks for the info. Looks like if things are running okay for me now I won't want to install something that could potentially cause me problems later.

[lavinog]

I just barely installed Kubuntu 10.04 on my laptop and the fans were running constantly. Once I installed the ATI fglrx drivers this changed. I'm not sure if this was coincidental or it the graphics drivers are helping things run cooler now. Just a thought in case this helps.

In lucid, the open source ati drivers have all power saving features disabled. The fglrx driver has them all available and enabled.

The open source drivers needs a 2.6.34 kernel, or modesetting needs to be disabled.

[squiddy]

In lucid, the open source ati drivers have all power saving features disabled. The fglrx driver has them all available and enabled.

The open source drivers needs a 2.6.34 kernel, or modesetting needs to be disabled.

and lucid won't have 2.6.34 kernel, right?