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multiple monitor output not working , either HDMI or inbuilt display
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Question

My laptop is dell inspiron 3421 

 

with

 

intel core-i3

 

intel HD 4000 with HDMI output.

 

bootloader is chameleon.

 

SMBios MacBookPro 9,2

 

 

flags

 

IntelCapriFB=4

 

IGPEnabler=yes

 

dart=0

 

SytemType=2

 

 

Every thing except Wifi used to work before reinstallation.

 

Now HDMI out put have issue after reinstallation.

 

I can only use one display output at a time,

 

either HDMI or laptop display.

 

what can i do to fix issue?

 

 

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