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Questions tagged [powertop]

powertop is a script for reducing power consumption on laptops and desktops running Ubuntu.

2
votes
1answer
27 views

16.04 kernel Update breaks power saving - how to fix?

I used to have 7-9 hours of battery life on my system running 16.04LTS. But, recently, I noticed battery life halving to around 4.5 hours. It seems this has been going on since around May '18. ...
0
votes
1answer
392 views

Why is Ubuntu 18.04 battery life superior to Lubuntu 18.04 in a Dell 7577

I'm struggling with the battery life of this laptop while running Lubuntu. In Windows 10 I'm able to get up to 9.5 hours of life in power save mode. But in Lubuntu 100% charge lasts about 2.5 hours. ...
0
votes
1answer
146 views

Can't “auto tune” Powertop

I installed powertop and tried to run --auto-tune as I've seen that seems to be the suggested options, however I'm pretty sure it's not actually running. I'm on a fresh Ubuntu installation and I'm ...
0
votes
0answers
195 views

Powertop Leads to Freeze and SATA Error in Ubuntu 18.04

I am currently running a fresh installation of Ubuntu 18.04 and trying to get things working. Because the computer is often running for long time, I tried to optimize power usage by using powertop. ...
1
vote
0answers
62 views

Thinkpad W540: high power consumption (even when idle)

I use Ubuntu 16.04 with kernel 4.4.0-53-generic and i3-wm on my Thinkpad W540 20BH with i7-4600M and Nvidia Quadro K2100 I disabled the discrete GPU via acpi_call to save battery However the ...
0
votes
0answers
81 views

Power consumption problem

Always when I return from suspend and check with powertop my consumption is about 16W. If I put the recharge and take It out the consumption goes to 8W. I am using kubuntu 17.10 with tlp and ...
0
votes
0answers
176 views

battery time estimate changes very frequently - would powertop --calibrate be beneficial

I'm running Kubuntu 17.10.1 on a Xiaomi Noteboot Pro i5-8250u. I've done powertop --auto-tune and tlp start. The battery estimate in the Battery-Time panel widget changes very frequently, the over ...
0
votes
0answers
22 views

Critical Battery Warning every minute on a fresh install

I just have installed Xubuntu 16.04.3 last night and did full update. I only have VMWare Workstation installed on the box other then some frequently used apps from default repos. I recieve critical ...
2
votes
0answers
127 views

Power saving control of CPU

My notebok is Asus U36SD and I've upgraded from 12.04 to 16.04. There was the Jupiter program in Ubuntu 12.04 which was able to drastically change the computer performance - when set to powersave, ...
2
votes
0answers
42 views

How to measure power consumed in each clock cycle in C (using ubuntu 16.04)?

I actually want to measure the power consumed while doing each 64 bit multiplications and additions on Intel i7-6700 processor. For that purpose I need to know power consumed per clock cycle , I'm ...
1
vote
1answer
367 views

PowerTop software

when i start sudo powertop --auto-tune i get message: The file will be loaded after performing the minimum number of measurements (only with battery)// how to fixed this? ubuntu 16.04 LTS
1
vote
0answers
117 views

What is a good number of wakeups per second?

I currently am getting around 600 per second with just this one google chrome window and the terminal window running powertop--which seems too high (and I used to get about 1.5x more battery life out ...
1
vote
0answers
947 views

Power consumption on Dell XPS 15 9560 + Ubuntu 17.04 (dualboot)

I've installed Ubuntu (kernel 4.10.0-26-generic) on my Dell XPS 15 and so far everything is good. I made some low-hanging power consumption optimizations: Disabled discrete Nvidia GPU Installed TLP ...
0
votes
0answers
311 views

Ubuntu 16.04 battery problem

I am using dell laptop with AMD a10 processor and windows 10 installed. I recently installed Ubuntu on my laptop, but the battery backup is very poor: only about 1 hour, whereas in Windows it was ...
5
votes
1answer
345 views

systemd service unit fails on startup

I wanted to change certain powertop params on Ubuntu 17.04 startup, therefore I created a shell script in /usr/sbin/ and made it executable: #!/bin/sh echo 'min_power' > '/sys/class/scsi_host/...
3
votes
0answers
106 views

Fingerprint Reader Power Consumption

I have fingerprint-gui working in Ubuntu 16.04 on my Lenovo x260. The problem is that powertop indicates that it is constantly using about 50-100mW of power even when I am logged in and it should be ...
1
vote
0answers
80 views

How to disable wireless mouse dongle when not in use

I am using Ubuntu 14.04 and have a Lenovo 500 Wireless Keyboard mouse combo. This comes with a small bluetooth dongle that I need to plug into the USB port. I am only using this when in office but ...
1
vote
1answer
309 views

USB Device Power Usage

I've been searching and messing around with powertop, tlp, and general power settings for a few days now and just can't seem to get rid of this ridiculous power drainage from a usb device. (Color ...
0
votes
0answers
2k views

How to save more power on top of Powertop and TLP?

I have TLP and Powertop to run at boot (with autotune for powertop set at boot as well). However, I still get abysmal battery life -- 2 hours usually at max when I'm using Eclipse or the internet -- ...
0
votes
0answers
449 views

Monitor Intel package states with intel_pstate driver

Is there a way to monitor Intel package states with intel_pstate driver? I'm running kernel 4.8.0-1-amd64 with intel_pstate driver on i7-6700k. powertop reports following error: modprobe ...
0
votes
2answers
997 views

How to change the value of dirty_writeback_centisecs?

I would like to change the value of dirty_writeback_centisecs. After seeing the Tunables in Powertop, there seems to be a problem with the value which is 6000 which is considered to be bad by Powertop....
1
vote
1answer
229 views

How to understand frequency in powertop [closed]

I attached a screenshot from powertop while playing a single video from youtube (360p). I do not know how to understand this page exactly, but from what I see in GHz, I guess it is under high load. My ...
2
votes
2answers
3k views

Ubuntu 16.04 Skylake overheating

I recently bought a laptop boarding a skylake i7-6700hq processor, and I managed to install Ubuntu 16.04, however, I noticed that the laptop was overheating resulting to a very short battery life ...
4
votes
0answers
137 views

How to determine identity of obscure `nic:br-` devices in powertop?

Currently, the powertop output from my computer (a thinkpad with skylake i7-6600U running ubuntu 16.04) looks like The battery reports a discharge rate of 6.90 W The estimated remaining time is 2 ...
2
votes
1answer
1k views

What are ms/s units in Powertop and how can I get power consumption in watts?

When I use the powertop command I get the following result: Summary: 1089.0 wakeups/second, 0.0 GPU ops/seconds, 0.0 VFS ops/sec and 27.2% CPU use Usage Events/s Category ...
2
votes
2answers
2k views

How to resolve “unknown op” error with Powertop on Ubuntu 16.04?

when I type: sudo powertop I got the following error: unknown op '{' Model-specific registers (MSR) not found (try enabling CONFIG_X86_MSR). read_msr ...
1
vote
1answer
114 views

How do I activate Powertop only when my laptop is running on the battery?

I don't want powertop to reduce performance while my laptop is plugged in.
1
vote
1answer
1k views

Intel 7260 bluetooth device (usb-device-8087-07dc) at 100% usage

My Intel 7260 bluetooth device is constanly draining battery. As per powertop: 13.9 W 100.0% Device USB device: usb-device-8087-07dc I have both bluetooth and NFC ...
1
vote
1answer
1k views

PowerTOP issue with fresh 16.04 install on ThinkPad E555

Here's what happened when I tried to set optimum settings after installing PowerTOP: Reading package lists ... Done Dependency tree. Status information can be read .... Done Suggested packages:   ...
0
votes
1answer
141 views

Wrong measurements obtained in powertop

so i was wondering why power gives 0mW for all the processes that are running in my laptop , even thought some of them needs a lot of computation, here's a screenshot of the output of powertop, thank ...
1
vote
3answers
2k views

`powertop --auto-tune` without messing with USB and touchpad

I like powertop --auto-tune because the speakers of my laptop are soughing when not being used and powertop disables the speakers completely when they're not used, stopping the noise. However, my ...
0
votes
1answer
552 views

how to undo powertop autotune settings?

I installed powertop in order to increase my laptop battery life. However, after the first usage I wasn't able to shut down my laptop. And later some strange things started to happen: laptop suddenly ...
2
votes
3answers
2k views

Powertop systemd service failed to load

After my installing of powertop and calibrating it, I create systemd service with following text: [Unit] Description=Powertop tunings [Service] Type=oneshot ExecStart=/usr/bin/powertop --auto-tune [...
1
vote
1answer
746 views

¨USB device: card reader¨ is draining the battery even if it is not used

I`ve installed Ubuntu on my MacBook Pro Retina 13 and I am trying to get the best battery life possible. I'm using PowerTop to manage what needs to be changed and pm-utils to save power. PowerTop ...
4
votes
1answer
1k views

High number of interrupts on Ubuntu 15.04 on Dell XPS 13 2015 (9343)

In powertop I noticed a high number of interrupts 'INT3432', which I think would be either the touchpad or sound card. I am concerned on the effect on the power consumption and battery life. FYI I ...
1
vote
0answers
40 views

How can i use powertop to save power utilized in a perticular variable

I want to access the power utilization in c code and save it to some variable. is it possible using power top
2
votes
0answers
951 views

Card reader draining power on MacBook running 14.04

I'm using 14.04 on a MacBook Air 5,2 (mid 2012, 13"). I just recently noticed powertop listing the built-in card reader to drain massive amounts of power: Power est. Usage Device name 6.68 W ...
3
votes
1answer
525 views

Why do some of my powertop commands not work

I'm trying to make my powertop tweaks permanent. I ran sudo powertop --html and the I have a list of the commands I need to add to /etc/rc.local. I added them to /etc/rc.local and most of them work, ...
0
votes
1answer
278 views

powertop html file not providing echo commands

I have been trying to improve the power consumption of my Lenovo Z580 running Ubuntu 12.04. Powertop looks like one promising lead and I have been following the instructions provided here: How do I ...
2
votes
1answer
273 views

Usage unit in Powertop

When I use the powertop utility, the Usage column values are measured in ms/s or us/s. I'd assume the second s is second but what is the first s?
3
votes
1answer
908 views

PowerTOP: why sum of “Power est” values is much less than discharge rate?

I'm running Ubuntu 13.10 on a MSI gs70 Stealth laptop. When I run powertop 2.4, I see: The battery reports a discharge rate of 38.1 W The estimated remaining time is 0 hours, 5 minutes Summary: 1524,...
3
votes
1answer
435 views

PowerTOP: what is “System baseline power”?

I'm running Ubuntu 13.10 on a MSI gs70 Stealth laptop. When I run powertop 2.4 it tells that (Device stats tab): The battery reports a discharge rate of 39.8 W System baseline power is estimated at ...
2
votes
1answer
70 views

Processor Tunable status according to Powertop

I am absolutely new to the LINUX platform, since I just migrated to Ubuntu 13.10 from Windows8. I installed powertop so that I could assess my processor. The Tunables window of the output returned by ...
0
votes
1answer
1k views

Trying to compile powertop for arm using cross compile in Ubuntu with malloc issue

I have been trying to compile powertop for an arm device. I saw powertop talked about here quite a bit and I am using Ubuntu to cross compile for the armv7l. The configure goes through checking ...
4
votes
2answers
1k views

Why do I get this unusual PowerTop readings?

I'm using PowerTop v2.1 in Ubuntu 13.04 and I'm getting some pretty strange readings. I've already run powertop --calibrate too. The main screen reads this: As you can see, the power estimates do add ...
9
votes
3answers
8k 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 didn'...
3
votes
0answers
1k 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 ...
0
votes
0answers
38 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 ...
2
votes
1answer
481 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
87 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 ...