Questions tagged [powertop]
PowerTOP is a Linux tool to diagnose issues with power consumption and power management.
18
questions
1
vote
1answer
118 views
How can I disable usb autosuspend for a given particular device or all usb
I am using on Fedora 32 a wireless usb mouse that get autosupended and that's driving me crazy.
I looked online and tried many things without success.
I identified the device using powertop
Good ...
0
votes
0answers
18 views
Laptop webcam uses about 4W although not used
Problem: Using powertop, I've noticed that my integrated webcam uses about 4W, although I don't use it. The value in the second column of powertop is 100%.
Desire: I want the webcam consume less ...
3
votes
0answers
2k views
Fedora battery life and tick_sched_timer
I recently installed Fedora 30 for work on my Gigabyte Aero 15X v8. I blacklisted nouveau drivers as I don't need the discrete GPU while working and installed TLD. But even after that, the battery ...
0
votes
1answer
210 views
Unable to set power tuning parameters at boot time from systemd
I'm using Fedora 30 on a laptop. I've tried setting power tune parameters using the systemd service that comes with powertop (powertop.service) and that didn't work. I then tried creating a shell ...
1
vote
1answer
195 views
powertop shows significantly more than 100% “C0 active” - isn't this impossible?
I ran a process which uses 100% CPU: stress -c 1.
In powertop, the "Idle stats" tab shows about 120% "C0 active" for the busy logical CPU.
By contrast when turbostat is used, turbostat --show Busy% ...
1
vote
0answers
430 views
laptop-mode-tools causes power saving behavior on the intel HDA sound card, despite /sys/module/snd_hda_intel/parameters/power_save being 0
I've run into a peculiar issue. Let me describe: (please read EDIT2 as it gives the most important piece of the situation)
On boot, from GRUB I pass argumentssnd_hda_intel.power_save=0 snd_hda_intel....
1
vote
0answers
874 views
Reduce high power consumption by keyboard and trackpad
I am running Fedora 27 on a 2014 11 inch MacBook Air, using GNOME 3.26. I only average about 5 hours on battery instead of the 9 hours this model would last running Mac OS. I know getting the 9 hours ...
1
vote
1answer
757 views
Why does this USB device not autosuspend?
Running powertop and tabbing over to "Device stats", I see 100% usage - which means no autosuspend - for "USB device: usb-device-8087-0a2a".
Googling this ID tells me it is a bluetooth device. Or ...
5
votes
1answer
718 views
card reading killing my battery, on macbook pro running Debian
I am currently using a macbook pro but the operating system is debian 8.2 not os x
I am using a macbook pro but there's this one device that's just draining a lot of power. This USB device: Card ...
2
votes
0answers
339 views
Linux Wifi High Power Consumption
I'm running Fedora 20, kernel 3.15.6 and ath9 driver with an ateros card.
My battery life is very short, on an older debian install I had around 3 to 4 hours, now I'm between 1 and 2 hours.
Powertop ...
2
votes
0answers
842 views
High varying discharge rate
I got an Asus N76VB notebook. On Windows I can easily stay on battery for 3-4 hours in powersave mode, but on Linux (first Ubuntu 14.04, currently Fedora 20) the battery's discharge rate varies from ...
4
votes
1answer
2k views
Two “Audio codecs” have 100% power usage in PowerTOP - what does this mean?
Should I be worried?
My battery power doesn't last long (~1hr), could this be the reason?
How can I fix this (if it has to be fixed at all)?
7
votes
1answer
5k views
Powertop doesn't display Power est. column
When I run powertop, it doesn't display the "Power Est." column that shows the estimated power consumption in Watts of each row. It should look like in the screen capture here:
MacBook Pro Retina: ...
3
votes
0answers
2k views
MacBook Pro Retina: huge power consumption
I'm currently running Debian/Jessie on a MacBook Pro Retina 10,1 15" (early-2103). Everything is going well (ethernet, WiFi, retina, etc.) but I worry about its power consumption.
laptop-mode manages ...
0
votes
1answer
1k views
Openbox root autostart?
I want to run a script as root when the computer starts. This was earlier done in rc.local, but not anymore.
What I've tried:
putting the script in /etc/profile.d
adding the /pathto/script.sh in /...
3
votes
1answer
1k views
Power consumption monitoring problem
I used powertop v.2.1 under Ubuntu 12.04 but it missed the power est. column.It's the same situation as described https://bugzilla.redhat.com/show_bug.cgi?id=796068 and that bug is supposed to be ...
10
votes
3answers
10k views
How do I make Powertop's suggestions permanent?
When I run Powertop, and look at the Tunables screen, about twenty things are listed as Bad. I can toggle these to Good by pressing enter, and when I do so, projected battery lifetime doubles.
How ...
12
votes
2answers
13k views
Powertop tunables: what does it do?
I just installed Powertop 1.98 on my laptop (T420 + FC15).
There is a section called "Tunables". Half of my devices show as Bad. I see I can toggle from Bad to Good? What this section is for? What ...
