You are not logged in.

#1 2014-12-18 21:04:26

gdlr
Member
Registered: 2014-05-01
Posts: 9

Higher power consumption after suspend

Hello,
    It seems that my power consumption is significantly higher after resuming from a suspend than before. I suspend with the systemctl command. Measuring the battery usage (with powertop or looking at /sys/class/power_supply/BAT0/power_now on my laptop), I get the following numbers :
    - 6-7 W before suspend
    - 10-11 W after
Those number are quite stable in time, in particular the higher consumption stays until shutdown. I have tried looking at the power decomposition of powertop, and it seems that the backlight display consumption is indeed higher, although I keep the same luminosity level. I tend to consider the decomposition usage by powertop as a guess estimate anyway, so I am not sure whether this means anything.
Any ideas on how to solve this issue, or how to investigate further on?

Cheers,
Guillaume

Offline

#2 2014-12-20 15:05:14

gdlr
Member
Registered: 2014-05-01
Posts: 9

Re: Higher power consumption after suspend

Any idea about where I should post this question, maybe?
I'd be grateful for any answer, thanks.

Offline

#3 2014-12-25 11:13:28

PUE
Member
From: Earth/Europe/Austria
Registered: 2009-05-09
Posts: 52

Re: Higher power consumption after suspend

Have a look at powertop before and after suspend. I noticed that some power saving options get turned off when suspending. I don't have a solution though.

Offline

Board footer

Powered by FluxBB