RehabMan
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- Joined
- May 2, 2012
- Messages
- 181,058
- Motherboard
- Intel DH67BL
- CPU
- i7-2600K
- Graphics
- HD 3000
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I was wondering if this would somehow be applicable to nVidia graphics... MCP79 chipset graphics, particularly ? Has anyone had success in achieving full range of brightness control using ACPI backlight or native backlight kext (w/ direct access to registers) on an nVidia based (non-optimus) laptops?
Many optimus machines use the Intel backlight controls (perhaps even if you have an option to turn optimus off).
Some machines have working backlight methods in DSDT. Some with up to 100 levels (for Win8), which is rather helpful for smooth transitions/etc...
Also, if you can figure out what hardware locations are used for backlight control, a similar patch could be written for such hardware.