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Battery drain while suspended
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As reported here there is high battery drain while suspended (out of the box PureOS setup). Affected models seem to include 13v2, 15v2, 15v3. Bios include Coreboot 4.7-Purism-4 and AMI. OS include PureOS, Debian, Ubuntu.

Event Timeline

jenda created this task.May 9 2018, 01:47

This could indeed be related to stripped firmware as the firmware we strip out (the intel nonfree firmware) indeed contain power management parts.

On boot I am seeing

Failed to load DMC firmware i915/skl_dmc_ver1_26.bin. Disabling runtime power management.

bruno added a subscriber: bruno.May 12 2018, 15:03
devnull added a subscriber: devnull.EditedJul 24 2018, 09:50

I am also experiencing the drain issue. However, I am running Ubuntu 18.04 and seeing:

[    1.564862] [drm] Finished loading DMC firmware i915/skl_dmc_ver1_26.bin (v1.26)

So I don't think the error above is related. I ordered Samsung memory and will see if it makes a difference.

I can confirm that the Samsung memory corrects the issue under Ubuntu.

Part number M471A2K43CB1-CRC.

is this a possible relation too

My new RAM is CT16G4SFD824A C16FE
My old RAM was CT16G4SFD8213 C16FH1

An overnight suspend of ~8h resulted in 86%–>79%, or ~7% battery charge loss, a marked improvement from the ~60% I was seeing.

jeremiah.foster triaged this task as Normal priority.Jun 24 2019, 13:23
jeremiah.foster removed a subscriber: zlatan.todoric.