LinuxQuestions.org
View the Most Wanted LQ Wiki articles.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Laptop and Netbook
User Name
Password
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).

Notices

Reply
 
Search this Thread
Old 07-20-2004, 06:41 AM   #1
dizzi
Member
 
Registered: Jun 2004
Location: Yorkshire, UK
Distribution: Slackware, Mepis LiveCD
Posts: 146

Rep: Reputation: 15
empty /proc/acpi/fan directory


Hey

After much trials and tribulations :-), I was able to get some ACPI functionality on my notebook - Sager NP5620 running Slack 10 kernels 2.4.26 and 2.6.7. Supend and Standy don't appear to work but this is not a real issue because the system is used mostly as a desktop replacement. What is really annoying, is the fan noise. The fans never seem to stop when the notebook is running on electricity from the wall outlets - even when the cpu load is 0% and during prolonged periods of inactivity. When powered by the battery though the fans do go on and off in accordance with system temperature.

I have read that the fans can be controlled with ACPI using the entries in the /proc/acpi/fan directory. The problem is that on my system, this directory is totally empty. Has any one who has had a similar experience been able to have those files created in that directory afterwards thus facilitating some fan control? I would truly like to get a solution.

Cheers.
 
Old 07-20-2004, 11:43 AM   #2
auditek747
Member
 
Registered: Feb 2004
Location: Ohio, USA
Distribution: Arch Linux
Posts: 464

Rep: Reputation: 30
Are your ACPI functions built in to the kernel or modules?
 
Old 07-21-2004, 03:55 PM   #3
dizzi
Member
 
Registered: Jun 2004
Location: Yorkshire, UK
Distribution: Slackware, Mepis LiveCD
Posts: 146

Original Poster
Rep: Reputation: 15
They are built into the kernel.
 
Old 07-23-2004, 05:02 AM   #4
ebit
Member
 
Registered: Jul 2004
Distribution: Slackware 10.1
Posts: 39

Rep: Reputation: 15
I've got an empty fan directory, fan does turn on and off though. Turns on at 50 and off at 40 when on mains or battery.

I hacked top so that I could watch the battery level and temp without using gkerllm.
 
Old 07-23-2004, 12:15 PM   #5
auditek747
Member
 
Registered: Feb 2004
Location: Ohio, USA
Distribution: Arch Linux
Posts: 464

Rep: Reputation: 30
Just guessing here, but are the ACPI functions in your bios enabled?
I have an old Gateway laptop and I keep these functions DISABLED in the
bios. I have used both APM and ACPI with good fan control.
Just in case it matters, these are the ACPI functions I have enabled:

ac
battery
button
fan
processor
thermal
 
Old 07-24-2004, 11:39 AM   #6
dizzi
Member
 
Registered: Jun 2004
Location: Yorkshire, UK
Distribution: Slackware, Mepis LiveCD
Posts: 146

Original Poster
Rep: Reputation: 15
Yep the acpi functions in the BIOS are enabled
 
Old 08-19-2004, 12:27 PM   #7
DaUnKnOwN
LQ Newbie
 
Registered: Aug 2004
Posts: 9

Rep: Reputation: 0
i dont know if i have acpi in kernal or module. i know thats what i selected in the summary of the installation, my fan directory is also emtpy what should i do to fix this?
 
Old 11-22-2006, 07:52 PM   #8
hamen
LQ Newbie
 
Registered: Nov 2006
Posts: 1

Rep: Reputation: 0
Hi,
I have the same problem: /proc/acpi/fan is empty.
But fans work well.
I just wonder who controls them!!??
At this time, it's just curiosity!!

My /proc/acpi/thermal_zone/THRM contains

cooling_mode polling_frequency state temperature trip_points

and it works well with gkrellm.
Only fans are the mistery...
Any idea?

Thanks,
hamen

PS
Maybe I have Jedi powers to control my fans.. no?
 
  


Reply


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
acpi fan module PiLgRiM Suse/Novell 3 11-17-2004 12:41 PM
fan control in acpi chunlee Linux - Newbie 0 11-16-2004 06:41 AM
Fan Control and ACPI settings? Dobs01 Linux - Hardware 4 11-15-2004 08:42 AM
all entries in /proc seems to be empty? tuxfood Linux - Newbie 1 08-01-2004 05:31 AM
kernel 2.4.20 & acpi-20021212-2.4.20.diff => no /proc/acpi Tinkster Linux - Software 5 03-24-2003 01:56 PM


All times are GMT -5. The time now is 09:52 AM.

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