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Questions tagged [powertop]

9 questions
11
votes
2 answers

Why tick_sched_timer uses so much power on Linux

According to my powertop (on 5.3.1 kernel): Power est. Usage Events/s Category Description ... 3.85 W 7,7 ms/s 437,0 Timer tick_sched_timer 3.85W on a Laptop is huge, sometimes it gets even up…
Krzysztof Krasoń
  • 295
6
votes
0 answers

How to debug tick_sched_timer high power usage?

My tick_sched_timer is using a lot of power, this is the output of powertop: The battery reports a discharge rate of 24.7 W The power consumed was 516 J The estimated remaining time is 3 hours, 0 minutes Summary: 2419.8…
Szigyártó Mihály
  • 161
2
votes
0 answers

How do I disable devices to conserve power?

I run ArchLinux on a Lenovo G series and downloaded powertop and it says that USB bluetooth and "USB device: Lenovo EasyCamera" are drawing a lot of power. While it advised I implement these rule: Autosuspend for USB device Lenovo EasyCamera…
Cyrus Fischer
  • 21
2
votes
0 answers

Bluetooth won't work after running powertop -c

I'm on Manjaro Linux. I ran powertop -c, and after the calibration process, my bluetooth stoped working. Here are the ouputs of somme commands I ran: $ lsmod | grep bluetooth bluetooth 626688 7 bnep ecdh_generic 24576 1…
Henrique Barcelos
  • 1,347
1
vote
1 answer

Power Saving in Ubuntu ( Linux )

I installed the PowerTop application in Ubuntu 11.04 and according to it, npviewer.bin is consuming more power than other processes. What is npviewer.bin? Why does it take most of the computer's power? What if I do sudo pkill npviewer.bin ?
Vikram
  • 129
  • 4
1
vote
1 answer

Load balancing tick

After Ubuntu upgrade (some time ago, from rather ancient version), my Lenovo S10 netbook fan does not stop. $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 10.10 Release: 10.10 Codename: maverick $…
Alexander Gladysh
  • 1,012
1
vote
0 answers

Huge power drain since I switched from Windows to Linux

I have just recently installed Linux aside from Windows on my Huawei Matebook X Pro, but faced significantly less battery life than on Windows. When I switch to Windows I get around 10 hours while Linux only runs for 2 hours on battery. That's an…
rahim
  • 11
0
votes
2 answers

Can't set Qualcomm Atheros AR9485 card power on laptop under Linux

I've been trying to set the power management on my wireless card. I looked at PowerTOP and I tried setting power management on the wireless card, but it doesn't work. When I tried using the command provided by PowerTOP, iw dev wlan0 set power_save…
Ertain
  • 90
0
votes
1 answer

Linux - Make powertop tweaks only temporary

I use ubuntu linux. I usually have 6hrs of battery life. However I'd like to squeeze in more. I'm afraid to use powertop because I don't know if the tweaks are permanent or last until reboot. How to make them only temporary?
MyWays
  • 257