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Issue 782298 link

Starred by 1 user
Status: Untriaged
Owner: ----
Cc:
philipchen@chromium.org
█ scollyer@chromium.org
briannorris@chromium.org
█ sha...@chromium.org
nsanders@chromium.org
adurbin@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug



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ec: servo_v4 dies when plugging charger

Project Member Reported by sha...@chromium.org, Nov 7 2017 
As briannorris@ and I have observed, sometimes servo_v4 seems to restart when plugging a charger into the "DUT POWER" port. We should first check to see if this is a panic in EC FW (it's not the only explanation for this failure, but probably the easiest to check), but it's difficult to check without UART pins. We should try enabling servo_v4 console UART, pulling those pins out, and checking for anything useful around failure time.

Comment 1 by briannorris@chromium.org, Nov 7 2017 

IIUC...it's not a crash or reboot on the Servo. I can reconnect to the Servo EC console after it re-enumerates, and it still has context (e.g., reports gettime of much longer than just the reconnect -- if I 'reboot', gettime shows only a few seconds).

The symptom seems the same as when I first plug into a Cr50-enabled device -- the Servo briefly de-enumerates from my host system.

Comment 2 by nsanders@chromium.org, Nov 8 2017 

Anything in the console log?

Is this with a DUT plugged in or no?

Comment 3 by briannorris@chromium.org, Nov 8 2017 

I think this is partially forked from my recent comments here:

https://issuetracker.google.com/65837068

You'll find my logs there.

But Shawn's description sounds different than mine.

Comment 4 by philipchen@chromium.org, Nov 21 2017

Cc: philipchen@chromium.org
►

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