<< Solved >> Dell Optiplex 7020 - 4K monitors on Intel 4600 Integrated GPU

[nicksoph]

The HDMI/DP cable issue is two fold - one its almost impossible to get monitor resolutions above 1920x1080 and two, hinders proper sleep/wake. This is a reply given by an Nvidia engineer that speaks to the differences between power management using hdmi and DP.

" You are absolutely correct in that this is indeed due to hot-plug event. This is actually the expected behavior due to the DisplayPort specification. Unlike HDMI and DVI connections the DisplayPort connection will report a hot-unplug event when the display is powered OFF, and this hot-unplug event will remove the display completely from topology. Another word when the DisplayPort display is powered OFF then it is completely removed from the OS. As you power the display ON, it triggers a hot-plug event again and then the display is re-enumerated and added back to topology. The re-enumerating of the display triggers the OS to re-arrange the desktop icons, and this is normal behavior of the OS when ever a display is removed and plugged back in. With HDMI/DVI connection, even if the display is powered OFF the display is actually still part of the toplogy, so there is no hot-plug event triggered. In fact, if you physically disconnect the HDMI/DVI connection from the PC then it would likely trigger the same behavior, since physically disconnecting and then re-plug the HDMI/DVI will trigger the same hot-plug event. This is completely between the monitor and the OS and we have no control over.

I’m not exactly sure how AMD is getting around this issue, but I’ll certainly forward to our development team for review and consideration. Some DisplayPort monitors have option to disable hot-plug event, so that if monitor is powered OFF it will not send the hot-unplug event to OS. Unfortunately not many monitor provide this option so you can check the monitor on-screen menu to see if there is any option related to hot-plug event. Alternative is to use HDMI/DVI connection, otherwise using a 3rd party software to save and restore your desktop icons is the best workaround. Again I will certainly forward feedback to our development team that AMD has a solution for this. I know for a fact we don’t have anything to disable this hot-plug event being sent by the monitor.

Best regards, Ray "

 

[nicksoph]

Just looking at my rebuilt Catalina machine and realised that there is a problem with HDMI sound on a single monitor setup. I have a monitor on the DP nearest the vga port which shows up in About this mac as the inbuilt display but no HDMI sound on that port. If i plug it into the other DP then I get sound but the display shows as external and waking from sleep leaves the monitor black until a reboot. Is there a way to swap either the sound or primary DP to the other DP?

 

[nicksoph]

Been playing with power settings and cleaning up the config.plist and have a couple of questions
1. Are people using the USBAllInject kext in their final build or is it just useful to get there?
2. Is anybody on a pre 5000 version of Clover and Catalina - are there any issues?

This config.plist has been cleaned out of the things that I think dont do anything, Im using it with an SSDT for my particular processor and a USBPorts.kext from Hackingtool and ask if anyone is able to compare it to their own config and comment if any of the things that have been removed.

 

[Procyon]

Here's some more tools from Dell for BIOS extraction.

[help] Dell Optiplex 7060 w/Intel HD 630 graphics

@tph33 Do you have a 4K monitor?

www.tonymacx86.com

Hey! Has this thread been deleted? Is there any chance we could get it restored?

 

[mgrimace]

Interesting, after some discussion it looks like the 'scaled' options with a connected 4k display are definitely limited (shows 1920x1080 or lower scaling resolutions) vs., connecting the same monitor to a real MacBook (which shows much higher scaling resolutions available, e.g., 1440 scaling). Anyone have any thoughts/ideas/leads where this could be tweaked? I tried SwitchResX as a workaround but it doesn't show any HiDPI options > 1920x1080 and true 3840x2160 is wayyy to small without HiDPI.

 

[trs96]

after some discussion it looks like the 'scaled' options with a connected 4k display are definitely limited (shows 1920x1080 or lower scaling resolutions) vs., connecting the same monitor to a real MacBook

Is this only with macOS Big Sur ?

 

[trs96]

Is there any chance we could get it restored?

Once someone gets banned all their posts are deleted permanently.

 

[mgrimace]

Is this only with macOS Big Sur ?

No, on Catalina - I tried Big Sur and found 4k didn't work at all. As far as I can tell it looks like WhateverGreen's (WEG) enable-hdmi20 option is not working (known bug) with Big Sur. I’m not sure if it’s this value specifically, or how the properties are applied overall but I'm waiting for an update/fix before I jump back in. I'm not entirely sure why an HDMI patch is required given I'm DP>DP, but it seems overall like there's something up with how Lilu is able to patch display settings. I have no honest idea.