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HELP POST-installation SIERRA10.12.1 / AUDIO / GRAPHICS / BRIGHTNESS

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Hello, good night with all friends, I hope you are good at everything.
....
I want to ask for your support, to solve a problem with the installation of my laptop please,

On my laptop I have Sierra 10.12.1 installed so far I have only managed to activate:
- keyboard
- battery icon
- ethernet
 
Someone of you who can help please activate the following:
- Activate Graphics
- Activate sound / audio
- Activate Blackligth (brightness / keys controller)
- hdmi
- Wifi....
I would thank you infinitely my friends
I will be aware of your quick answers .....

* here my specifications:

Dell Inspiron 14 5000 series (5458)

- Intel (R) Core (TM) i5-5200U CPU @ 2.20GHz

- Ram 4GB »

- Intel HD Graphics 5500

- PCI Network:

Intel Dual Band Wireless-AC 3160 AC HMC WiFi Adapter

Realtek RTL8139 / 810x Fast Ethernet Adapter

- Audio

Intel Broadwell HDMI @ Intel Broadwell - Mini HD Audio

Realtek ALC255 @ Intel Wildcat Point-LP PCH High defi .....

regards
God bless you my friends
 

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You can head over here and consult existing Inspiron 5x58 threads where you'll find what you need to get graphics acceleration with your HD5500 iGPU, Realtek LAN card and ALC255 audio.

 

Intel wireless cards are not supported at all so you'll have to either replace your card by a compatible model or use a USB adapter.

https://osxlatitude.com/forums/topic/11138-inventory-of-supportedunsupported-wireless-cards-2-sierra-mojave/

 

Edited by Hervé

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Hello, good night everyone,

My friend @Hervé

I have a new problem friend
...
Install saw 10.12.1 ...
and I did not like ...
I returned to Captain 10.11.6 and every time I start the system I get this error. :-(
someone of you knows how to solve it ..? see the photo
...
I will be very grateful friend
regards
God bless you
:-)

20190111_101754.jpg

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