I made a patch for gingerdx to fix automatic brightness.
I feel the sw automatic brightness very slow (including from GDX v008), so I prefer the hw automatic brightness, it works wery well!
This patch It will be change your hw_cofig.sh, the undo ...
If you want to enable automatic brightness via cm9 settings follow these steps:
Settings --> display--> brightness
-Enable automatic brightness
-Enable ultra brightness
Settings --> display --> automatic blacklight
-Enable Use custom ...
I saw lot of people try testbiulds.
If you intrest about 4.2.1 builds you can find nightly builds in here. or you can download / update via Goo manager
Google apps (2012.11.30 or later)
You can find the actual changes in here.
Big thx and respe...
First nightly released
The ribbon settings pretty awesome.