powertop is a script for reducing power consumption on laptops and desktops running Ubuntu.
2
votes
3answers
79 views
Missed power est. column in powertop?
I used powertop v.2.1 under Ubuntu 12.04 but it missed the power est. column.
It's the same situation as described here and that bug is supposed to be fixed already.
I tried lm_sensors but it ...
0
votes
0answers
57 views
(13.04) PowerTOP reports lots of usage by USB2.0-CRW, but autosuspend is on
I used to be able to keep my power usage under 10 watts without WLAN on but now that rarely happens. One reason might be this, reported by PowerTOP all of the time:
Power est. Usage ...
1
vote
0answers
23 views
How to toggle Runtime-PM on shutdown/boot
I'm experiencing an issue with the Runtime PM option (via PowerTOP or laptop-mode) on Ubuntu 12.04. As far as I know, it's just a bug (although I think it affects Lenovo laptops more from what I've ...
0
votes
0answers
22 views
How To Install Powertop 2.3 & Permanently Save Changed Of Powertop Suggestions In Ubuntu? [duplicate]
I have Google every ppa and checked that they all have the powertop 2.1, So how can i install powertop 2.3 just recently released.
How do make permanently save changes of powertop, i know i can put ...
1
vote
1answer
93 views
Integrated webcam on a Dell V131 drains the battery when not used. How to turn it off?
After using the integrated webcam, it never fully turns off and keeps hogging the battery. From powertop:
The battery reports a discharge rate of 22.6 W
The estimated remaining time is 0 hours, 41 ...
3
votes
1answer
26 views
powertop color codes
I am running powertop in Ubuntu 10.04. It shows a horizontal bar near the top that displays something like:
Wakeups-from-idle per second : 723.6 interval: 10.0s
My question is, why is the ...
1
vote
1answer
963 views
How to tweak Powertop to reduce power consumption?
I am a completely new user to Linux/Ubuntu. I looked through tips on battery issues and PowerTOP but failed to find clear tips on how to tweak PowerTOP except for Toggle Tunable.
Could someone look ...
2
votes
1answer
542 views
Battery is drained too quickly
I'm getting really low battery life under ubuntu, not even close to windows. I tried powertop, and I saw that my laptop is consuming in idle nearly 20 watts (a bit more).
I tried to install ...
1
vote
1answer
1k views
How can I disable usb-autosuspend for a specific device?
This is related to the issue discussed in this question.
Summary: the mouse freezes when operating on battery since it is autosuspended after a certain time and needs more time to wake up.
Disabling ...
2
votes
1answer
3k views
What should VM writeback timeout be set to for a laptop?
I am using powertop to check that my machine is setup in a way that will give me good battery life. After installing laptop-mode-tools all of the "Tunables" section shows "Good" except VM writeback ...
5
votes
2answers
2k views
How do I install Powertop 2.1 in 12.04?
I have installed Powertop from the Ubuntu Software Center and just realized that a new version is available. However this new version is not yet available in the Ubuntu Software Center. How do I then ...
1
vote
3answers
989 views
Why does battery power drain quicker in Ubuntu compared to WIndows in Dell Inspiron? [duplicate]
Possible Duplicate:
Why does my computer get less battery life with Ubuntu compared to Windows?
When I used Windows 7 with Dell Inspiron, I got a battery life of 2 hours. But ever since I ...
3
votes
1answer
2k views
Do 'Tunables' in 'PowerTop' help on battery life?
I installed PowerTOP 1.97 and i got many Bad in Tunables, I know i can press enter to toggle but does it really change anything? and if it does will it still be changed when i reboot? If i get ...
0
votes
2answers
624 views
How can I disable asus-nb-wmi when using battery power mode?
I'm trying to improve the battery life of my Asus U32U notebook. I'm running Ubuntu 12.04 64bit and using powertop it shows the following:
PowerTOP 1.97 Overview Idle stats Frequency stats ...
1
vote
1answer
249 views
I have problems with compiling powertop on Ubuntu Precise
I tried to compile the latest release of powertop from github.
I get some errors and I dont know what to do to fix this.
make[3]: Leaving directory `/root/powertop/src'
make[2]: Leaving directory ...
2
votes
1answer
847 views
Battery time decreased on an HP ProBook 4530s
I have HP ProBook 4530s. In Windows 7 after installing all HP drivers the 6-Cell battery works perfectly for 2+ hours but in Ubuntu 11.10 and now in 12.04 the battery time is not sufficient. It works ...
18
votes
6answers
10k views
How do I make Powertop changes permanent?
I'm on a Compaq 615 and it's fan is loud as hell. Not much you can do about that but I'm trying to keep the CPU/GPU as cool as possible.
This is what Powertop has to say:
If I change all of them ...
3
votes
1answer
770 views
Why does powertop think I have two displays?
Ok, so in powertop (version 1.97), in both the "overview" and "device stats" sections, I see two devices, each called "display backlight". One shows the correct percentage of use, e.g. if I lower ...
8
votes
4answers
5k views
100.0% usage by Audio codec hwC0D0: Realtek
I ran powertop, and it says that the Realtek audio codec is using 100.0% of the cpu. Is this a problem?
I'm running Ubuntu 11.10 32-bit on Intel® Core™ i7 CPU M 640 @ 2.80GHz × 4 Sony VAIO laptop.
0
votes
1answer
843 views
How do I install powertop 1.13?
Since Ubuntu 11.10 a version of powertop is in the repository that is by intent aimed for developers. However for me as a user the old "classic" version like 1.13 is better suited. Do you know a ...
9
votes
2answers
718 views
How to permanently save powertop's suggestions?
So it's ok that if I run powertop then it suggest me to disable xy, etc., but after I exit powertop, reboot the pc, and start it again[powertop], it brings up the same tips again! So how can I ...
2
votes
3answers
997 views
Powertop is reporting 0 wakeups/second - can this be right?
I'm investigating tweaking my power consumption performance on Ubuntu. When I run Powertop, the output seems strange, and not much like any of the screenshots I see on the web. That might be ...
2
votes
1answer
512 views
Why shouldn't you enable laptop-mode when on AC power?
I'm looking at ways to reduce the amount of power used by my laptop, and one of the things I came across was enabling laptop-mode. Apparently this is enabled when I'm not on AC power, but I'd like to ...
2
votes
3answers
3k views
Sound system is eating away the battery
In my laptop the sound code is running at 100% even when I am not playing anything. It is causing my palm rest to hit significantly. While I do not face the issue on windows machine where I am using ...
3
votes
2answers
451 views
How to limit apps from writing too often and logging too much to disk?
Are there ways to keep this at a minimum or to limit it to only when necessary?
This is from powertop.
I suppose with Firefox there is not much that can be done unless history/cookies/cache/etc are ...
7
votes
0answers
3k views
How to make powertop “Device Power Management” suggestion permanent? [duplicate]
When I run powertop on my laptop I get following suggestion:
Suggestion: Enable Device Power Management by pressing the P key
Doing this results in considerable saving in power usage and I would ...
6
votes
2answers
5k views
Can and should I try enabling the CONFIG_INOTIFY kernel configuration option?
PowerTOP just offered the following suggestion:
Suggestion: Enable the CONFIG_INOTIFY
kernel configuration option. This
option allows programs to wait for
changes in files and directories
...
4
votes
1answer
3k views
How do I autosuspend a usb device?
I am trying to follow the instructions on Lesswatts, to enable usb autosuspend.
When I run powertop, it says, that I have a device (USB device 2-6 : 2.4G Multimedia Wireless Kit (Chicony)) that is ...
0
votes
1answer
230 views
Chromium wakes up 300 times a second
If I've got a gmail tab open and nothing else, running powertop shows
Wakeups-from-idle per second : 414.5 interval: 30.0s
no ACPI power usage estimate available
Top causes for wakeups:
61.9% ...
3
votes
1answer
4k views
How to enable the CONFIG_PM_ADVANCED_DEBUG kernel configuration option [duplicate]
Possible Duplicate:
What is kernel configuration?
I'm trying to save the battery power. For that i'm using powertop and one suggestion is "Enable the CONFIG_PM_ADVANCED_DEBUG kernel ...
