automatic backlight control
pgf at laptop.org
Mon Nov 21 16:18:12 EST 2011
forster at ozonline.com.au wrote:
> The shift from colour to monochrome is noticable and would be annoying if it
> happened a lot, for example as clouds pass, trees and people move.
> If the hysterisis, the difference between cutin and cutout brightness is large,
> the change in mode will happen a lot less frequently and not be annoying.
> I would like to try it switching automatically to monochrome but with large
> I'll wait to try OS12
you may be in a better position to play with this, geographically
speaking, than i am -- we're running low on sunlight these days.
the hysteresis is currently hard-coded in powerd -- you'll find it in
the function ambient_adjust_init(). it only gets set once, though, so
after powerd starts, you can change the limits directly and they
should take effect immediately.
additionally, to cause auto-monochrome to happen, uncomment the
obvious lines at the end of set_brightness() and brightness_ramp().
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paul fox, pgf at laptop.org
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