You can't keep screen backlight on with sys/power/wake_lock... It's
used to gate auto suspend only. If in your system early suspend is
turning off backlight then holding lock at kernel level won't help.
You might need to check if you have backlight interfce implimented to
handle turnin it on/off as needed.
-girish
On Feb 18, 2010, at 6:39 PM, Ryan <arewh...@gmail.com> wrote:
Early on in init.rc, we exec an executable that under certain
circumstances will block and do something for a long time (many
minutes or even hours). This is the desired behavior. All the while
the screen is illuminated and being updated by the executable.
Eventually, that executable will complete and the init sequence will
continue.
Once that executable completes and init begins running again, the
screen blacks out momentarily, but then returns once android begins
running. I've tried writing a wake lock from the init script using the
write command, but it does not appear to keep the display illuminated.
The Java API for wake locks provides for different types of wake locks
(PARTIAL, SCREEN_DIM, etc). What's the type when using /sys/power/
wake_lock and is there a way to keep the screen illuminated using /
sys/
power/wake_lock?
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