Dell Inspiron 15 7559 Weird Display Problem

[k4r7hy]

My laptop spec i7-6700HQ, Intel HD 530, 4k UHD screen.

I have successfully installed sierra and got it to boot with a dummy ig-platform-id, if i use 0x191b0000 to enable graphics it boots into black screen. I attached a HDMI display to the laptop, looks like the internal display is detected properly and graphics works.

I noticed if i spam click the power button the internal display turns on for a second and I can get a glimpse of the login screen.

Please someone help

 

[RehabMan]

My laptop spec i7-6700HQ, Intel HD 530, 4k UHD screen.

I have successfully installed sierra and got it to boot with a dummy ig-platform-id, if i use 0x191b0000 to enable graphics it boots into black screen. I attached a HDMI display to the laptop, looks like the internal display is detected properly and graphics works.

I noticed if i spam click the power button the internal display turns on for a second and I can get a glimpse of the login screen.

Please someone help

Maybe you forgot to patch for pixel clock limitation. Read FAQ.
http://www.tonymacx86.com/el-capita...faq-read-first-laptop-frequent-questions.html

 

[k4r7hy]

Maybe you forgot to patch for pixel clock limitation. Read FAQ.
http://www.tonymacx86.com/el-capita...faq-read-first-laptop-frequent-questions.html

I used the coredisplay patch form this https://github.com/Floris497/mac-pixel-clock-patch-V2. the laptop would fail to boot before i patched that. I checked the bios settings, I am using the latest clover bootloader version, tried out different config.plist files from different guides on this laptop.
It would either boot into a black screen not boot at all or the backlight would be on without displaying any picture.
the display is completly dead until i spam the power button which turns the display on and off or if i press ctrl+insert+f7 then it comes up for a brief second and then shuts off. what do you think is turning the display off?

 

[RehabMan]

I used the coredisplay patch form this https://github.com/Floris497/mac-pixel-clock-patch-V2. the laptop would fail to boot before i patched that.

Actually, without the pixel clock patch it should have still booted using an external monitor.

It would either boot into a black screen not boot at all or the backlight would be on without displaying any picture.
the display is completly dead until i spam the power button which turns the display on and off or if i press ctrl+insert+f7 then it comes up for a brief second and then shuts off. what do you think is turning the display off?

Is DVMT-prealloc set as required? (64mb or greater...)
Note: Your profile seems to be inaccurate.

 

[k4r7hy]

Is DVMT-prealloc set as required? (64mb or greater...)
Note: Your profile seems to be inaccurate.

I used this guide http://www.insanelymac.com/forum/topic/305710-guide-intel-hd-graphics-5500-on-os-x-yosemite-10103/ and set my DVMT-prealloc to 96MB.
However my problem is not fixed yet.

this is what i get before it turns black
And touchscreen works I mean if i touch my display i can see the mouse pointer respond to it on my external hdmi display.

 

[RehabMan]

I used this guide http://www.insanelymac.com/forum/topic/305710-guide-intel-hd-graphics-5500-on-os-x-yosemite-10103/ and set my DVMT-prealloc to 96MB.
However my problem is not fixed yet.

this is what i get before it turns black
And touchscreen works I mean if i touch my display i can see the mouse respond to it on my external hdmi display.

Read FAQ, "Problem Reporting"
https://www.tonymacx86.com/threads/faq-read-first-laptop-frequent-questions.164990/

Also, please fix your profile as per FAQ. Need all hardware details requested.