Questions tagged [powertop]

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

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gnome-power-manager Shows Only Wireless Mouse Battery, no AC or Other Devices

I'm diagnosing potential power issues with a Ubuntu 20.04 workstation and just attempted to interact with Power Statistics, a/k/a gnome-power-manager. Unfortunately, the only hardware object that ...
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Nvidia consuming power

I discovered that NVIDIA is consuming 95% of the battery-life alone & i want to deactivate it or prevent it from working entirely on my PC. Solutions I tried: Purging NVIDIA entirely. (no ...
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1answer
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How to mitigate the lack of suspend-to-ram when idle powerdraw is too high

My Supermicro X11-SRM-F lacks support for suspend-to-ram, as can be seen from the kernel reporting: ACPI: (supports S0 S4 S5) and has been confirmed by Supermicro support. I used a kill-a-watt meter ...
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Ubuntu 18.04 Backlight Regulation not working since powertop --calibrate

I just used sudo powertop --calibrate on my XPS 7590 with i7-9750H running ubuntu 18.04 LTS, in order to improve my battery life. When rebooting my system, I noticed that I cannot adjust the screen ...
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1answer
937 views

Ubuntu 20.10 dbs_work_handler/tick_sched_timer too much power (bluetooth?)

Running a Asus G14 (Ryzen 9) Zephyrus and Ubuntu 20.10 and noticed dbs_work_handler using 2.5W and tick_sched_timer using 1.5W went just idling. Searching around some have mentioned it maybe the ...
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1answer
72 views

kernel is spewing ata link up messages every second

These messages are appended every 1 second: ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310) ata3.00: configured for UDMA/33 I think it may be related to me letting ...
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291 views

No Package C-states (powertop) Dell XPS 15 9570

I recently made the switch from Windows to Linux after the discrete graphics chip (nVidia 1050Ti) died. The overall experience is very pleasant as Linux is highly customizable, snapy and less resource ...
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534 views

Apply powertop settings

On the powertop page of archlinux wiki it says: There are two ways to automatically apply the suggested settings: Recommended: You can apply these settings at boot by using module parameters, udev ...
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1answer
607 views

how to avoid powertop settings to roll back automatically

I'm using powertop and tlp in ubuntu 19.10 in my thinkpad x380 yoga. The battery drains pretty quick so I'm using powertop and tlp to monitor and manage power consumption. The problem is that every ...
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1answer
776 views

Bug in kernel 5.3 - no GPU powersaving (i915 module has no RC6 powerstate)

My laptop shows in powertop (idle tab) GPU power on 100%. RC6 or other energy saving states 0%. I check my old laptop - it was different there. Reading about it I found the parameter enable_rc6. It ...
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1answer
405 views

sudoers doesn't work

I added powertop to /etc/sudoers (sudo visudo) but it doesn't work. I checked all possible problems I can imagine. What did I missed? user@ellie:~$ whoami user user@ellie:~$ groups user adm cdrom ...
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2k views

Powertop autotune error - Cannot load from file

I'm trying to perform --auto-tune in powertop, however I get the following error Cannot load from file /var/cache/powertop/saved_parameters.powertop If I browse to that directory the file does ...
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1answer
771 views

Help identifying "unknown USB device" in powertop

I was looking at powertop yesterday when I noticed the following entry in the tunables tab: Good Autosuspend for unknown USB device 1-4 (8087:0029) I would like to identify what this "...
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1answer
2k views

Ubuntu 19.04 high power consumption with intel integrated graphics

Aero 17 laptop w/ 9750H processor, nvidia gtx 1660ti, 1080P 144hz monitor Windows 10 reports 8 hours of battery life Ubuntu 19.04 reports 2 hours In Ubuntu 19.04, reporting sky-high 30-40 watt ...
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1answer
6k views

PowerTOP "cpufreq_stats failed" and "Devfreq not enabled" running --auto-tone

Basically, I'm trying to reduce the thermals of an Ubuntu install and trying everything. Quiet as can be in Windows 10 except for gaming, as it should be; Ubuntu fans rev up to 75-100% doing simple ...
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1answer
501 views

Buggy powersave in Bionic 18.04

I'm having problems with the powersave mode, I hope someone can help ;D PREVIEW INFO: I have installed: tlp, powertop, nvidia privative drivers When I start the laptop on battery mode the graphic ...
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1answer
169 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. ...
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3k 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. ...
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2answers
6k 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 ...
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486 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 ...
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193 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 ...
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174 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, ...
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62 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 ...
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1answer
2k 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
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1answer
619 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 ...
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2k 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 ...
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1answer
762 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/...
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1answer
176 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 ...
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166 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 ...
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1answer
922 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 ...
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3k 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 -- ...
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793 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 ...
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3answers
6k 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....
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1answer
721 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 ...
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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 ...
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1answer
629 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 ...
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1answer
4k 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 ...
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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 ...
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1answer
341 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.
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1answer
2k 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 ...
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1answer
2k 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:   ...
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1answer
500 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 ...
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3answers
8k 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 ...
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1answer
3k 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 ...
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4answers
3k 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 [...
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1answer
1k 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 ...
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1answer
2k 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 ...
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0answers
1k 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 ...
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1answer
665 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, ...
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1answer
385 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 ...