Ticket #2402 (closed defect: fixed)

Opened 7 years ago

Last modified 7 years ago

Key wakeup is less reliable than power button wakeup

Reported by: cjb Owned by: dilinger
Priority: blocker Milestone: Trial-2
Component: kernel Version: Development build as of this date
Keywords: Cc:
Action Needed: Verified: no
Deployments affected: Blocked By:


B4, latest everything.

Pressing the power button while in suspend gets the display back immediately. Pressing a keyboard/game key sometimes gets us a hang with a black (as distinct from "off") screen. Serial should help work out what's happening.

Change History

Changed 7 years ago by cjb

Tried both Q2C18 and Q2CD7F, same result.

Changed 7 years ago by cjb

John Gilmore pointed out that the EC has a line to the DCON to wake it immediately on keypress. That could be what's happening with the black screen.

Changed 7 years ago by dilinger

Ok, the black screen is from DCON being in sleep mode, I believe. I have been unable to reproduce this on my B3, but I suspect what you saw was the DCON source switch/unfreeze failing..

Changed 7 years ago by jg

  • status changed from new to closed
  • resolution set to fixed
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