Welcome to the most active Linux Forum on the web.
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 09-27-2008, 04:59 PM   #1
LQ Newbie
Registered: Nov 2003
Distribution: Redhat
Posts: 1

Rep: Reputation: 0
power consumption: acpi vs apm ---> apm is the winner by far for suspend mode

On suspend mode, both of my laptops (IBM T40p and T42) have very
low performances using acpi. A fully charged laptop usually doesn't last more than 15 hours in standby mode!

However when I switch to apm, both laptops last for a few days!

Not sure if it's a hardware issue or software.

I have always experimented these issues (kernel-2.6.18, 2.6.19 2.6.22 and even 2.6.26).

Please let me know your experiences.

Old 09-30-2008, 12:22 PM   #2
Registered: Mar 2005
Location: North Carolina
Distribution: Arch
Posts: 977

Rep: Reputation: 72
I wish APM stayed around, it isn't really an option on most new laptops. I use it on this old Dell C600, I really prefer the power management to be handled by the hardware as much as possible. The problem with this usually is being unable to change the scheme while the system is running, but on this Dell I can hit Fn+F1 and the BIOS comes up. I can control the hard disk timeout, backlight timeout and everything from the BIOS, which means I don't have to worry about the OS controlling anything power related.
Old 10-01-2008, 09:16 PM   #3
Registered: Jul 2004
Posts: 164

Rep: Reputation: 30
iirc, there was an issue with thinkpads and suspend a while back--there's a solution around if you google.


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
APM S3 suspend erikt Linux - General 1 01-25-2006 03:21 PM
APM ACPI and power down donavan01 Linux - Laptop and Netbook 5 08-09-2004 01:03 PM
apm vs. acpi ? (modprobe: FATAL: Error inserting apm) OneManArmy Linux - Laptop and Netbook 0 05-12-2004 04:39 PM
ACPI / APM Fedora Core 1 and HP omnibook xe4100 (no power management)!! Russ-ST24 Fedora 2 12-03-2003 03:10 AM
APM vs: ACPI for Display 'Power Off" olias Slackware 3 11-08-2003 01:59 PM

All times are GMT -5. The time now is 08:15 AM.

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