Try this on HDMI

[wasdwasd0105]

Hi, I exchange the data between "framebuffer-con1-pipe" and "framebuffer-con2-pipe" like
framebuffer-con1-pipe

CQAAAA==

framebuffer-con2-pipe

CgAAAA==

it works now!
Maybe you can have a try

[Raymonf]

Do you mean you set framebuffer-con2-pipe to CgAAAA==, or to CQAAAA==?

[wasdwasd0105]

actually, in my laptop, the HDMI port is on framebuffer-con1
, and it works after iframebuffer-con1-pipe is set into CQAAAA==

[eamigo86]

Hi @wasdwasd0105, could you share your config.plist file to see your success configuration?

[Raymonf]

Hm, mine crashes when I plug an HDMI cable in.

+1 to sending over config.plist

[wasdwasd0105]

config.plist.zip

[kevinshroff]

@wasdwasd0105 perhaps provide your entire EFI? Thank you

[Raymonf]

I've done a diff of what you had in your config.plist and merged the changes into mine, and it seems that hotplugging HDMI doesn't crash anymore. But, it still doesn't work...

Do you use a hub or the built-in HDMI port? I'm trying to use the built-in port.

[wasdwasd0105]

could you give me the screenshot of the IOservices, just plug in the HDMI cable and see if there are any changes on the appleintelframebuffer

[0xFireWolf]

Public tester needed. [FIX] Coffee Lake Intel UHD Graphics 630 on macOS Mojave: HDMI Output Issue [Public Testing Stage]

Please take a loot at the fix for HDMI output issue, and I am looking for feedback.

[Raymonf]

@0xFireWolf Doesn't work for me. Where do I find the bus/pipe IDs applicable for my XPS? That might be why.

I tried your examples (the alldata properties) and also swapped them since I'm pretty sure HDMI is on connector 2. macOS doesn't recognize the external monitor when I plug it in with the system on, and even with a reboot.

[LuletterSoul]

@0xFireWolf @Raymonf
Report: HDMI output issue has been fixed in my machine.See my repository for more update details
Dell-XPS-15-9570