- Sep 22, 2011
- HP EliteDesk 800 G4 Mini
- UHD 630
- Mobile Phone
I noticed that the sleep was working fine for HDMI a couple of days ago, when I was doing tests and, when connecting the integrated card to a TV (hdmi to hdmi), it surprisingly worked well. It was unexpected because the truth is that I had not thought about it. I had not yet commented it in this thread. Sorry. I was planning to do it after finishing the other post about the Z390 board and Catalina.
I have not experimented with HDMI->DP adapters. If you look at my HP EliteDesk 800 G4 Mini thread, you will notice that I needed to add device property "No-hda-gfx" to Device HDEF ( PciRoot(0x0)/Pci(0x1F,0x3) ) because my system would crash when waking from sleep. I am using DP->DVI adapters. You can read more here about why "No-hda-gfx" is necessary. If you still want to try your HDMI->DP adapter, consider adding the "No-hda-gfx" property as I have done. After adding this property, you will no longer have sound over HDMI / DP.
Again, I have no experience with HDMI->DP adapters, but it seems like No-hda-gfx might work.