Jump to content

[SOLVED] Dell Latitude e6420 i5 Sierra no hdmi


flaflasat
 Share

Recommended Posts

Hi everyone i apologize for my bad English, i have installed sierra on my latitude e6420 i5 1366x768 everything works perfectly except the external hdmi port, if i connect the cable the tv becomes all white and i just use the Dell Latitude E6220 with I5-2520M, HD3000 and 1366x768 LCD - Mavericks / Yosemite / El Capitan / Sierra I reinstalled 2 times all but without results I tried the kext patch but nothing I tried various dsdt but nothing. At startup I noticed 3 kext mistakes with this message:

The following symbols are unresolved for this kept:

_gIODisplayBrightnessProbKey
_gIODisplayLinearBrightnessProbKey

 

maybe the problem is that but I do not know how to fix it.

post-109175-0-05155000-1495801353_thumb.jpg

  • Like 1
Link to comment
Share on other sites

If the boot with hdmi connected the tv has white screen the same if insert cdmi later the monitor app detects the model of the connected TV but does not send the images just a white screen.

 

I also tried to install AppleBacklightInjector.kext but with no results at boot always the same 3 errors reported in the first image.

 

With Yosemite all perfect hdmi but in Sierra ...

 

Il Bios report my CPU with i5 2430M 2.4Ghz

post-109175-0-25831500-1495823850_thumb.jpg

post-109175-0-47297600-1495824853_thumb.jpg

post-109175-0-69194400-1495824860_thumb.jpg

Link to comment
Share on other sites

When I installed yosemite where everything works including hdmi info on the mac correctly recognizes the i5 to 2.4 ghz and the video card is recognized as:

Intel 0x8086

Id disp: 0x0116

Id rev: 0x0009

 

While in Sierra info on mac recognizes i5 at 2.5 ghz and the video card is recognized as:

Intel 0x8086

Id disp: 0x0126

Id rev: 0x009

 

The device ids are different

 

P.S.: I have change dsdt with E6420_HD3000_A23 and now I have same id disp 0x0116 but nothing no hdmi

Link to comment
Share on other sites

I have installed it for 2 times all by following your guide and downloading the package you indicated but i could not run it now i dumped the pach kext and left in /S /L /E the original one not pach and it works boh

 

But Airplay is not working

post-109175-0-08350300-1495884662_thumb.png

post-109175-0-66481800-1495884679_thumb.png

Link to comment
Share on other sites

 Share

×
×
  • Create New...