Announcing another early Android build for XO-4

Paul Fox pgf at
Wed Mar 19 22:51:46 EDT 2014

john wrote:
 > On Mar 19, 2014, at 5:12 PM, ben wrote:
 > > On 03/20/2014 07:01 AM, Esteban Bordón wrote:
 > >> Hi!
 > >> 
 > >> Someone knows how take a screenshot in android? Is there any keys combination for do it in the XO?
 > >> 
 > > Android brings in a hot key combination for screenshot which is press the hard volume down and power 
 > > buttons at the same time, hold them for a second. But unfortunately it does work on current XO-4 build.
 > > Need more investigation why.
 > Probably something to do with our power button going through the EC,
 > and not being directly sensed by the MMP3 SoC.
 > Power button events thus come in over the EC/Host communications ---
 > I'm not sure these are button down/button up events.

the power button does produce real down/up events, but until today,
when we released new EC firmware, both down and up came right
together, independent of how long the button was held.  plus, the
power button appears on a different input device than the rest of the
keyboard, which shouldn't confuse things, but might.

the new EC code produces real PRESSED and RELEASED events which the
kernel now translates to to real key down/up input events.  ben needed
this for the android power dialog, which relies on timing the button
press duration in order to pop up the menu.  it's vaguely possible
that this change also fixes the screenshot combo.

 paul fox, pgf at

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