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Status: Started
Owner:
Cc:
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EstimatedDays: ----
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OS: Chrome
Pri: 2
Type: Bug



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eve: Can't wake from S3 via input devices connected through Type-C docks

Project Member Reported by derat@chromium.org, Apr 25 2018

Issue description

Users are complaining that when using Pixelbooks in docked mode (i.e. external display connected and lid closed) with Type-C docks used to connect the display and external input devices, they're unable to use those input devices to wake the device from S3 after it idle-suspends.

See e.g. http://g/chromeos-discuss/Ds5lrZX1k-o

Instead, they need to open the Chomebook's lid to wake it, which is annoying and also results in their windows getting reconfigured due to the existence of the additional internal display.

What's the expected behavior here with regard to:

a) powering Type-C ports while in S3, and
b) waking in response to input events from devices connected via Type-C docks?

I suspect that this is unrelated to docked mode; it's just more annoying when in that state because you need to open the lid to get to the internal keyboard to wake the device.

Input devices connected via Type-A ports haven't had problems like this, to the best of my knowledge.
 

Comment 1 by bleung@chromium.org, Apr 25 2018

Dan:

The expected behavior is that any usb hid that is wakeup capable that is attached before entry into S3 should be a wake source. 

Eve has a known issue where power to the USB-C ports are dropped because the laptop enters Deep S3 mode even though there are USB devices attached. No USB bus power means no wakeups can happen.

This is the first I've heard that it's not working with Samus. Maybe split that off as a separate issue that's Samus specific.

It may also be the case that some hubs are buggy and don't send the wakeup message properly.

Comment 2 by bleung@chromium.org, Apr 25 2018

Cc: dlaurie@chromium.org
+duncan to talk about the Eve change. 

https://buganizer.corp.google.com/issues/64406191

The firmware update is not widely deployed yet on Eve, but it will be soon.

Comment 3 by derat@chromium.org, Apr 26 2018

Cc: tbroch@chromium.org
Owner: dlaurie@chromium.org
Status: Started (was: Untriaged)
Summary: eve: Can't wake from S3 via input devices connected through Type-C docks (was: Can't wake Chromebooks from S3 via input devices connected through Type-C docks)
Thanks! Scoping down to just track eve; I filed issue 837035 for samus.

Per http://b/64406191, it sounds like there's a good chance this is fixed in M67. If anyone who was seeing the issue can verify that, that'd be helpful to know.

Comment 4 by derat@chromium.org, Apr 26 2018

Description: Show this description

Comment 5 by tbroch@chromium.org, Apr 26 2018

Tested on my eve running dev connected to apple USB-C A/V adapter (hdmi + USB type-A -> logitech keyboard) and it correctly woke from S3 when I touched keys on keyboard from docked mode.

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