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Issue 644767 link

Starred by 4 users
Status: WontFix
Owner:
█ alberto@chromium.org
Last visit > 30 days ago
Closed: Apr 2018
Cc:
snanda@chromium.org
█ caesars@chromium.org
█ alberto@chromium.org
tbroch@chromium.org
█ sha...@chromium.org
█ puneetster@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug



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USB low powered charger warning coming up when using Pixel charger

Project Member Reported by kuscher@chromium.org, Sep 7 2016 
https://feedback.corp.google.com/#/Report/20396405200

Definitely some weirdness here : 
[92087.005876] PDLOG 2016/09/07 02:15:39.1473214538 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 3000mA
[92087.006383] PDLOG 2016/09/07 02:15:39.1473214538 P0 SNK Charger ??? 1904mV max 20000mV / 2250mA
[92087.006863] PDLOG 2016/09/07 02:15:40.1473214539 P0 SNK Charger ??? 4980mV max 5000mV / 3000mA
[92147.168830] PDLOG 2016/09/07 02:15:39.1473214538 P0 SNK Charger ??? 19658mV max 20000mV / 2250mA
[92147.169292] PDLOG 2016/09/07 02:16:04.1473214563 P0 SNK Charger ??? 1904mV max 0mV / 0mA
[92147.169748] PDLOG 2016/09/07 02:16:04.1473214563 P0 Disconnected
[92147.171313] PDLOG 2016/09/07 02:16:04.1473214563 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.171797] PDLOG 2016/09/07 02:16:04.1473214563 P0 Disconnected
[92147.172248] PDLOG 2016/09/07 02:16:06.1473214565 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.172724] PDLOG 2016/09/07 02:16:07.1473214566 P0 Disconnected
[92147.174273] PDLOG 2016/09/07 02:16:07.1473214566 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.174924] PDLOG 2016/09/07 02:16:07.1473214566 P0 Disconnected
[92147.175391] PDLOG 2016/09/07 02:16:07.1473214566 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.175865] PDLOG 2016/09/07 02:16:07.1473214566 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 3000mA
[92147.177632] PDLOG 2016/09/07 02:16:07.1473214566 P0 SNK Charger ??? 820mV max 20000mV / 2250mA
[92147.178088] PDLOG 2016/09/07 02:16:07.1473214566 P0 SNK Charger ??? 4980mV max 5000mV / 3000mA
[92147.178566] PDLOG 2016/09/07 02:16:08.1473214567 P0 SNK Charger ??? 4980mV max 20000mV / 2250mA
[92147.179021] PDLOG 2016/09/07 02:16:09.1473214568 P0 Disconnected
[92147.180605] PDLOG 2016/09/07 02:16:09.1473214568 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.181063] PDLOG 2016/09/07 02:16:09.1473214568 P0 Disconnected
[92147.181578] PDLOG 2016/09/07 02:16:09.1473214568 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.182037] PDLOG 2016/09/07 02:16:09.1473214568 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 3000mA
[92147.183607] PDLOG 2016/09/07 02:16:09.1473214568 P0 SNK Charger ??? 2109mV max 20000mV / 2250mA
[92147.184055] PDLOG 2016/09/07 02:16:09.1473214568 P0 SNK Charger ??? 5009mV max 5000mV / 3000mA
[92147.184503] PDLOG 2016/09/07 02:16:10.1473214569 P0 SNK Charger ??? 19658mV max 20000mV / 2250mA
[92147.185156] PDLOG 2016/09/07 02:16:12.1473214571 P0 Disconnected
[92147.186669] PDLOG 2016/09/07 02:16:12.1473214571 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.187107] PDLOG 2016/09/07 02:16:12.1473214571 P0 Disconnected
[92147.187757] PDLOG 2016/09/07 02:16:12.1473214571 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 500mA
[92147.188229] PDLOG 2016/09/07 02:16:12.1473214571 P0 SNK (not charging) Charger ??? 5000mV max 5000mV / 3000mA
[92147.189714] PDLOG 2016/09/07 02:16:13.1473214572 P0 SNK Charger ??? 1699mV max 5000mV / 3000mA
[92147.190183] PDLOG 2016/09/07 02:16:22.1473214581 P0 SNK Charger ??? 4980mV max 5000mV / 1000mA
[92147.190606] PDLOG 2016/09/07 02:16:22.1473214581 P0 SNK Charger ??? 4658mV max 5000mV / 3000mA

It does seem to get to 20V sometimes, but then I see a log of the voltage crashing down (~1.9V) and then the port disconnecting.

Not sure if the problem is on Zinger side or on Chell.


@Alberto, can you triage please

Comment 1 by snanda@chromium.org, Sep 7 2016

Cc: -bleung@chromium.org -abodenha@chromium.org vpalatin@chromium.org tbroch@chromium.org
+tbroch & vpalatin in the hope that they recall if this is similar to wonkiness seen with early Zingers.  If so, we can check whether Caesar has an old Zinger and send him a replacement.

Comment 2 by bleung@chromium.org, Sep 7 2016

Cc: sha...@chromium.org

Comment 3 by vpalatin@google.com, Sep 8 2016 

It's actually very hard to tell from the PDLOG if you have an old Zinger.

You can try to trigger a suspend/resume and look for the cros_ec_pd_update traces in the kernel log, if you have an old unsupported/non-upgradeable Zinger, this module will barf at you, else it might remain silent. The various fixes in Zinger power circuit are difficult to identify with certainty, that's why we asked Googlers to throw away their non-MP Zinger.

Comment 4 by snanda@chromium.org, Sep 8 2016

Cc: -vpalatin@chromium.org caesars@chromium.org
Caesar, could we ask you to do a suspend/resume and file a feedback thereafter?

Comment 5 by kenneth....@gmail.com, Apr 19 2018 

I had seem this issue as well on my new pixelbook. The charger was connected through an Anker dongle and the dongle disconnected (https://bugs.chromium.org/p/chromium/issues/detail?id=834250) and then once in a while I get the low powered charger warning.

Comment 6 by bleung@google.com, Apr 19 2018 

Kenneth:

This bug is about a charger from several generations ago (the 2015 Chromebook Pixel's 60W power adapter, and a preproduction version of it to boot) so it is almost certainly NOT the same issue you are seeing with your new Pixelbook and a 3rd party charger. Please file a separate bug.

Comment 7 by tbroch@chromium.org, Apr 19 2018

Status: WontFix (was: Assigned)
►

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