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dell xps l702x brightness adjust failed

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RehabMan said:
Certainly your internal laptop display is not connected via DP. So that is the first thing you need to correct...
Click to expand...

How could I correct it? tks
 
wongsyuhoi said:
How could I correct it? tks
Click to expand...

I have no Nvidia hardware... so you will need to do your own research.

But there are some patches on my github repo (related to Nvidia) you may find helpful...
 
RehabMan said:
I have no Nvidia hardware... so you will need to do your own research.

But there are some patches on my github repo (related to Nvidia) you may find helpful...
Click to expand...

I found my dsdt have gfx and pegp,2 graphics describe，I combine gfx and pegp as one describ,and then is works.But I had other problem：cannot use the appleintelcpupowermanage.kext need use the nullcpu, I had patch the bios by myself,but still useless
 
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