Laptop power saving script for #! & Debian

el_koraco · 2011-11-03 10:43:50

@josec89
You may take a look at this
http://www.techytalk.info/linux-kernel- … #more-1972

el_koraco · 2011-11-03 10:47:57

@hadran
What do you think of adding cpufreq-utils to the mix? It might go something like this, though I've never scrpited in my life big_smile

#!/bin/sh
# A script to enable laptop power saving features for #! & Debian GNU+linux.
# [url]http://crunchbanglinux.org/forums/topic/11954[/url]

...
case "$1" in
    true)
    # Enable some power saving settings while on battery
       ...
        cpufreq-set -g powersave
       ...
    false)
       ...
        cpufreq-set -g ondemand
    ;;

esac

exit 0

Last edited by el_koraco (2011-11-03 10:50:48)

Istvan · 2011-11-29 18:58:14

Enable/disable compositing under Xfce :

> true

env DISPLAY=:0 sudo -u youruser -H xfconf-query -c xfwm4 -p /general/use_compositing -t bool -s false

> false

env DISPLAY=:0 sudo -u youruser -H xfconf-query -c xfwm4 -p /general/use_compositing -t bool -s true

Insert theese lines in the according part of the powersave script, and spare some more milliwatts.

Last edited by Istvan (2011-11-29 19:01:10)

MarioMaster100 · 2012-01-16 06:19:18

Hmm I edited it and put the backlight on 10% but it still has the battery at about full brightness.

joypilhub · 2012-01-19 04:12:42

joypilhub wrote:

jelloir wrote:
Igneo676 wrote:
Hmm, I'm noticing power gains whenever I run after I boot up the system.
I know it's in the right spot and I know I made it executable, shouldn't that mean it runs on startup and gives me power savings right away, or does that mean that I gotta be charging it and then unplug it on startup? Maybe I'm doing something wrong...?
The script is executed when the power state changes (when you unplug/plug your AC). You can check what state the power is running in via:
cat /proc/sys/vm/laptop_mode
0 = disabled, 1 = enabled.
You typically need a power manager like gnome-power-manager running which in turn executes /usr/sbin/pm-powersave true|false.
pmutils then executes the various powersaving scripts in /usr/lib/pm-utils/power.d/ and /etc/pm/power.d/
Are you sure it works only with a power manager as the backend?
I did not use any and running the powersave script during the session and at start up always worked out of the box. However, since some time it only works after suspend/hibernation.
I'm not sure what causes this change.
Unfortunately I'm not using Debian but Arch.
pm-utils 1.4.1-3
linux 3.0.7-1
upower 0.9.14-1
Acpi is not installed.
cat /proc/sys/vm/laptop_mode when AC is unplugged gives me 5 as result.
Regards

Related to my problem I came up with a solution to run 'upower -e' at startup of Openbox which is required to detect changed ac stages.

Tunafish · 2012-02-19 14:09:26

el_koraco wrote:

@hadran
What do you think of adding cpufreq-utils to the mix? It might go something like this, though I've never scrpited in my life big_smile

#!/bin/sh
# A script to enable laptop power saving features for #! & Debian GNU+linux.
# [url]http://crunchbanglinux.org/forums/topic/11954[/url]

...
case "$1" in
    true)
    # Enable some power saving settings while on battery
       ...
        cpufreq-set -g powersave
       ...
    false)
       ...
        cpufreq-set -g ondemand
    ;;

esac

exit 0

Great idea. I tried and it works.
I use cpufreq-set -r -g powersave and cpufreq-set -r -g ondemand

Last edited by Tunafish (2012-02-19 14:09:48)

ChickenPie4Tea · 2012-05-25 15:33:57

will I be able to make use of this script even though I always have my laptop plugged in and not on battery?
It''s just that it would still be handy to use as the computer would run cooler.

Unia · 2012-06-09 21:56:46

Recently, there's been a thread on this on the Arch boards. I have edited this script to suit my own setup (e.g. hard disk drives, laptop screen brightness, cpu governors...) and made it suitable to use with pm-powersave (the same as the first post here). For those interested, you can find it here:

https://github.com/Unia/Powersave

All credit should go to Taylorchu who made the initial Powerdown script, on which mine is very heavily based.

MarioMaster100 · 2012-08-24 14:27:22

Could this script be modified to auto-unload modules while running on AC power without the battery plugged in?

Unia · 2012-08-24 15:00:22

MarioMaster100 wrote:

Could this script be modified to auto-unload modules while running on AC power without the battery plugged in?

Which script? The one Hardran3 posted in the first post here does that already.

If you're using mine, it can definitely be modified to do so. Just take a look at Hardran3's script in the first post on how to do it wink

Last edited by Unia (2012-08-24 15:00:50)

MarioMaster100 · 2012-08-24 15:31:40

Unia wrote:

MarioMaster100 wrote:
Could this script be modified to auto-unload modules while running on AC power without the battery plugged in?
Which script? The one Hardran3 posted in the first post here does that already.
If you're using mine, it can definitely be modified to do so. Just take a look at Hardran3's script in the first post on how to do it

Well I use Hardran3's script and it only unloads the module when running from battery, if you start off with no battery plugged in and just run off AC it doesn't auto-unload the module.

Unia · 2012-08-24 15:37:39

MarioMaster100 wrote:

Unia wrote:
MarioMaster100 wrote:
Could this script be modified to auto-unload modules while running on AC power without the battery plugged in?
Which script? The one Hardran3 posted in the first post here does that already.
If you're using mine, it can definitely be modified to do so. Just take a look at Hardran3's script in the first post on how to do it
Well I use Hardran3's script and it only unloads the module when running from battery, if you start off with no battery plugged in and just run off AC it doesn't auto-unload the module.

Why would you want to unload a module for powersaving, when you are running on AC? In that case you should look into blacklisting modules

MarioMaster100 · 2012-08-24 17:30:10

Unia wrote:

MarioMaster100 wrote:
Unia wrote:
Which script? The one Hardran3 posted in the first post here does that already.
If you're using mine, it can definitely be modified to do so. Just take a look at Hardran3's script in the first post on how to do it
Well I use Hardran3's script and it only unloads the module when running from battery, if you start off with no battery plugged in and just run off AC it doesn't auto-unload the module.
Why would you want to unload a module for powersaving, when you are running on AC? In that case you should look into blacklisting modules

I have but unfortunately to do that I'd have to blacklist other stuff that uses it and then I won't have usb stuff working hmm

Unia · 2012-08-24 18:46:37

Send me a PM and we might figure it out wink Lets keep this topic clean

Unia · 2012-09-02 13:28:57

I have made some changes to the way my script works. Before, it'd be copied to /etc/pm/power.d and be run through pm-utils' pm-powersave function.

Now that I switched to systemd, I can't use pm-powersave anymore so my script wouldn't get run. To make it work with systemd, I've made two udev rules that get placed in /etc/udev/rules.d and my script will now go to /usr/bin.

The udev rules detect changes in the power state (charging|discharging) and run /usr/bin/powersave {true|false} accordingly.

Note that the script itself hasn't changed, so you can still copy it and place it in /etc/pm/power.d and use it with pm-powersave.

dura · 2012-09-15 15:35:13

Like the OP, I was disappointed with initial power consumption, after installing Waldorf AMD64 to my ThinkPad x121e. However, I have had exactly the same issue with other distributions using the 3.2x kernel.

I have used TLP, powertop, and installed Hardran's script. Most importantly I entered the following to grub:

pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1 i915.semaphores=1

This final addition reduced the watt consumption by a full 50%!!!!!!!

Maybe still a tad too high, but is running at 9.5 when busy doing lots.

Very happy. I was considering distro-hopping, but sticking with CrunchBang----and enjoying the self management of issues rather than losing savoire faire as it is abstracted by a more strategic order.

Thankyou. For other thinkpad users with similar issue I suggest looking at: https://wiki.archlinux.org/index.php/Le … kPad_x121e

And: http://linrunner.de/en/tlp/docs/tlp-configuration.html

And these forums of course.

Daniel

dura · 2012-09-15 20:13:53

There was, on inspection, while running on battery, a clicking sound while on battery. Every second (I checked a few times it wasn't my watch).

The dirty writeback, apparently.

I turned off this script as being executable.

Clicking disappears. Power consumption drops dramatically again - to 5w on idle!! Amazing. Better than Linux Mint 11, better than Windows that was on it initially. Astonishing. Happiness. Elation. New found crunchiness.

Daniel

Last edited by dura (2012-09-15 20:31:13)

prometheus · 2012-11-28 20:06:04

Were you able to use scripts that hardran3 posted along with tlp? I know they are redundant, but I was trying to run something else in the powersave script, but it is not working. Does pm-power manager get disabled by tlp? Since I am not familiar with how these scripts are activated, I hope to get some schooling here. Any pointers would be helpful. The following is the script I am trying to run. It runs fine if I invoke it manually.

#!/bin/sh

tag=pmpersonal

case $1 in
    true)   # on battery power
              # do nothing
        logger -t $tag "on battery"
        # sudo -k tee /proc/acpi/bbswitch <<<OFF
        /home/john/.screenlayout/laptoponly.sh
    ;;
    false)  # on a/c power
        logger -t $tag "on A/C"
        # sudo tee /proc/acpi/bbswitch <<<ON
    sleep 2
        /home/john/.screenlayout/1920monitor_right.sh
    ;;
esac
exit 0

Last edited by prometheus (2012-11-28 20:06:36)

dura · 2012-11-28 22:56:21

I have both tlp and hardrans script running. I can remember about some clashing but don't think it applied to my machine, as laptop mode isn't running....or something. It's just running from power.d, in bin, as executable. You can fiddle with tlp config to not make them clash. Hardran's script is executed whenever battery is unplugged.

zubcho81 · 2012-12-19 12:25:48

Hi, so I'm very new here, but actively reading your posts. Running Crunchbang 10 on Dell D600 1.71 Ghz Pentium M, 1256 Ram, radeon 9000 32mb Vram, Hdd Hitachi 20Gb @ 4200rpm with 2.6.39.-4.dmz.1-liquorix-686 kernel.

So i've managed to undervolt the CPU to the max and have a stable system and running little tweaked by me script from the first page. I'm happy with all but something isn't right for me. When i'm running powertop it is telling me this...

2.48 W      0.0 pkts/s                Device         Network interface: eth1 (ipw2200)
1.51 W      0.0 pkts/s                Device         Network interface: eth0 (tg3)

And here is the question: How can I stop eth0 (lan port) from running without killing the wifi? I don't want to blacklist it, because some day I might use it. smile

Here is my version of the script from the first page:

#!/bin/sh
# A script to enable laptop power saving features for #! & Debian GNU+linux.
# http://crunchbanglinux.org/forums/topic/11954

# List of modules to unload, space seperated. Edit depending on your hardware and preferences.
#modlist="uvcvideo"
# Bus list for runtime pm. Probably shouldn't touch this.
buslist="pci spi i2c"

case "$1" in
    true)
    # Enable some power saving settings while on battery
       # Enable laptop mode
        echo 5 > /proc/sys/vm/laptop_mode
#--------------------------------------------------------------------------------------
       # Less VM disk activity. Suggested by powertop
        echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
#--------------------------------------------------------------------------------------
       # Intel power saving
        #echo Y > /sys/module/snd_hda_intel/parameters/power_save_controller
        #echo 1 > /sys/module/snd_hda_intel/parameters/power_save
#--------------------------------------------------------------------------------------
       # Set backlight brightness to 10%
        echo 1 > /sys/class/backlight/radeon_bl/brightness
#--------------------------------------------------------------------------------------
       # USB powersaving
        for i in /sys/bus/usb/devices/*/power/autosuspend; do
            echo 1 > $i
        done
#--------------------------------------------------------------------------------------
       # SATA power saving
        #for i in /sys/class/scsi_host/host*/link_power_management_policy; do
           #echo min_power > $i
           #done
#--------------------------------------------------------------------------------------
       # Disable hardware modules to save power
        for mod in $modlist; do
            grep $mod /proc/modules >/dev/null || continue
            modprobe -r $mod 2>/dev/null
        done
#--------------------------------------------------------------------------------------        
       # Enable runtime power management. Suggested by powertop.
        #for bus in $buslist; do
            #for i in /sys/bus/$bus/devices/*/power/control; do
              #  echo auto > $i
            #done
        #ipw2000 eth1 powersave
        iwpriv eth1 set_power 5

    ;;
#--------------------------------------------------------------------------------------
    false)
       #Return settings to default on AC power
        echo 0 > /proc/sys/vm/laptop_mode
        echo 500 > /proc/sys/vm/dirty_writeback_centisecs
        #echo N > /sys/module/snd_hda_intel/parameters/power_save_controller
        #echo 0 > /sys/module/snd_hda_intel/parameters/power_save
        echo 10 > /sys/class/backlight/radeon_bl/brightness
        for i in /sys/bus/usb/devices/*/power/autosuspend; do
            echo 2 > $i
        done
        #for i in /sys/class/scsi_host/host*/link_power_management_policy
            #do echo max_performance > $i
        #done
        for mod in $modlist; do
            if ! lsmod | grep $mod; then
                modprobe $mod 2>/dev/null
            fi
        done
        #for bus in $buslist; do
            #for i in /sys/bus/$bus/devices/*/power/control; do
             #done
        iwpriv eth1 set_power 6
        
    ;;
esac

exit 0

And pm-powersave.log

/usr/lib/pm-utils/power.d/anacron true:success.
/etc/pm/power.d/powersave true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/etc/pm/power.d/powersave false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.

dura · 2012-12-19 12:42:39

ifconfig eth0 down

You could make a script and put it in /bin so eth0 is turned off at boot. Make it executable:

#!/bin/sh
ifconfig eth0 down

Last edited by dura (2012-12-19 12:43:43)

zubcho81 · 2012-12-19 12:53:31

dura wrote:

ifconfig eth0 down
You could make a script and put it in /bin so eth0 is turned off at boot. Make it executable:
#!/bin/sh
ifconfig eth0 down

Thanks I've put this command in my script and it works. But it is weird because with or without eth0 the wat usage is the same. Maybe there is no consumption and powertop is showing some false data. Will leave it this way anyway. smile

Edit:
Hi, I have another question. When I'm booting the laptop without AC adapter the script is not starting. Why is that?

Last edited by zubcho81 (2013-01-09 08:34:18)

zubcho81 · 2013-01-09 08:35:07

bump

Please delete this smile

Last edited by zubcho81 (2013-01-09 08:36:18)

p950tes · 2013-01-10 13:08:07

I'm on a ASUS U31SG and got a problem using hardran's script: When the powersave mode was true (ie. running on battery) then it couldn't power off on it's own. It simply sat at "Will now halt" all the way until the battery died (or me forcibly powering down by holding down the power button). It worked fine to reboot, was only shutting down that was the problem. Has anyone else had this issue?

Anyway, by experimenting with the script a bit I in the found that removing 'pci' from the buslist variable solved the problem.

EDIT: I managed to find that the pci device causing this was:

USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)

By leaving that one to "on" and setting the rest of the pci power control to auto I am able to power down the laptop properly.
Oh, and thanks for a great script!

Last edited by p950tes (2013-01-12 17:14:43)

bandibp · 2013-01-18 20:02:43

This is what I'm getting for cat /var/log/pm-powersave.log

/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/etc/pm/power.d/powersave true:not executable.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.
/usr/lib/pm-utils/power.d/anacron false:success.
/etc/pm/power.d/powersave false:not executable.
/usr/lib/pm-utils/power.d/sched-powersave false:**sched policy powersave OFF
success.
/usr/lib/pm-utils/power.d/anacron true:success.
/etc/pm/power.d/powersave true:not executable.
/usr/lib/pm-utils/power.d/sched-powersave true:**sched policy powersave ON
success.

What are the two "not executables" referring to? How can I pinpoint this? Also, aren't all the powersave options supposed to be ON?

Also, I'm contemplating running noflushd along with this script. Is it a good idea, or does it clash with anything related to this script?

Thanks in advance for any help. And to OP for script.

CrunchBang Linux

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#76 2011-11-03 10:43:50

Re: Laptop power saving script for #! & Debian

#77 2011-11-03 10:47:57

Re: Laptop power saving script for #! & Debian

#78 2011-11-29 18:58:14

Re: Laptop power saving script for #! & Debian

#79 2012-01-16 06:19:18

Re: Laptop power saving script for #! & Debian

#80 2012-01-19 04:12:42

Re: Laptop power saving script for #! & Debian

#81 2012-02-19 14:09:26

Re: Laptop power saving script for #! & Debian

#82 2012-05-25 15:33:57

Re: Laptop power saving script for #! & Debian

#83 2012-06-09 21:56:46

Re: Laptop power saving script for #! & Debian

#84 2012-08-24 14:27:22

Re: Laptop power saving script for #! & Debian

#85 2012-08-24 15:00:22

Re: Laptop power saving script for #! & Debian

#86 2012-08-24 15:31:40

Re: Laptop power saving script for #! & Debian

#87 2012-08-24 15:37:39

Re: Laptop power saving script for #! & Debian

#88 2012-08-24 17:30:10

Re: Laptop power saving script for #! & Debian

#89 2012-08-24 18:46:37

Re: Laptop power saving script for #! & Debian

#90 2012-09-02 13:28:57

Re: Laptop power saving script for #! & Debian

#91 2012-09-15 15:35:13

Re: Laptop power saving script for #! & Debian

#92 2012-09-15 20:13:53

Re: Laptop power saving script for #! & Debian

#93 2012-11-28 20:06:04

Re: Laptop power saving script for #! & Debian

#94 2012-11-28 22:56:21

Re: Laptop power saving script for #! & Debian

#95 2012-12-19 12:25:48

Re: Laptop power saving script for #! & Debian

#96 2012-12-19 12:42:39

Re: Laptop power saving script for #! & Debian

#97 2012-12-19 12:53:31

Re: Laptop power saving script for #! & Debian

#98 2013-01-09 08:35:07

Re: Laptop power saving script for #! & Debian

#99 2013-01-10 13:08:07

Re: Laptop power saving script for #! & Debian

#100 2013-01-18 20:02:43

Re: Laptop power saving script for #! & Debian

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