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stockmind / dell-xps-9560-ubuntu-respin

Collection of scripts and tweaks to adapt Ubuntu and Linux Mint ISO images to let them run smooth on Dell XPS 15 9560.
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High idle power usage #50

Open DanielPerezJensen opened 5 years ago

DanielPerezJensen commented 5 years ago

So I installed ubuntu 18.04 some time ago with this respin, and it has worked wonders. But recently I have been noticing high power consumption even when idle, so I ran sudo powertop and discovered this line: 17.9 W 4,8 pkts/s Device Network interface: wlp2s0 (ath10k_pci) This device seems to be drawing a whole lot of power, so I figured it must be the video card. So I ran the scripts as provided in #8 but this does not seem to work properly. As the device still is taking some 20 W. What could be the issue here? Am I correct in assuming it is the video card? I have run sudo prime-select intel.

I recently installed CUDA and CDNN from nvidia because I wanted to use the tensorflow-gpu module. The issues have popped up after this, I believe it has something to do with this but not sure. I followed this tutorial to get it working: https://medium.com/@taylordenouden/installing-tensorflow-gpu-on-ubuntu-18-04-89a142325138.

Any help is appreciated as 3 hours battery life is quite annoying.

stockmind commented 5 years ago

The line you posted refers about the network interface = Device Network interface ... ath10k_pci

This seems the same issue: https://askubuntu.com/questions/888430/network-interface-of-dell-xps-13-9360-consumes-too-much-power/896042

Also those powertop values doesn't seems absolutely reliable

mjo22 commented 5 years ago

Any update on this issue @DanielPerezJensen? Thinking about upgrading from 16.04 to 18.04 but want to make sure CUDA will run smoothly and not impact battery life.

DanielPerezJensen commented 5 years ago

@mjo22 My battery life is now better than when I posted, I get some 7-8 hours now when running on the processor as opposed to the video card. I basically reinstalled Ubuntu with this respin because of another unrelated issue and it seems to have "fixed" itself. Sorry if this doesn't really help but I have not had any issues since doing that.