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Brightness control problem

 

Hello. I'm building ubuntu touch raring for LG L9 P760 which is supported
by CyanogenMod. I builded rom and it boots, but there are many bugs. I want
to fix first brightness control. Patch /sys/class/backlight/panel/brightness
doesn't appear, but i can control brightness from
/sys/devices/platform/omap/omap_i2c.2/i2c-2/2-0038/brightness.
If I do chmod 0666
/sys/devices/platform/omap/omap_i2c.2/i2c-2/2-0038/brightness it doesn't
fix problem. Has anybody had similar problem? I don't have any idea for
this.
artas182x