hi,
in the course of fixing http://pad.lv/1382559 adbd in vivid images now
requites you to unlock the screen first if you want to establish a
connection (from tonights nigly build on).
if you try to connect while the screen is locked adb will return
"error: closed"
to not get annoyed by having to unlock your screen all the time if you
do automated testing at home or some such, there is a way to put in a
override file so you only need to unlock once.
adbd will ignore the screen state if you "sudo touch /data/.adb_onlock"
note this change only landed in vivid yet but will (within the next 4
weeks) land in RTM images as well.
ciao
oli