What were you trying to do that didn't work?

Customer uses Intel AMT to administer headless workstations. When no monitor is attached to a workstation, the gpu gets shut down by Red Hat/Fedora and the Intel AMT remote connection shows a black screen because of that. This issue only occurs on RHEL8/RHEL9/Fedora, not on Windows.

To workaround this issue, customer connected dummy DisplayPort emulators (Vendor: TCT Model: DP1080P60) to the workstations to keep the GPUs active. This works on workstations with 9th generation Intel processors, but on new HP Z2 G9 Workstations with 12th generation Intel processor the DisplayPort emulator is not recognized anymore.

What is the impact of this issue to you?

Customer is unable to use Intel AMT to manage headless workstations.

Please provide the package NVR for which the bug is seen:

• kernel-5.14.0-427.24.1.el9_4.x86_64

How reproducible is this bug?:

Always.

Steps to reproduce

Boot RHEL 9.4 on a workstations with 12th generation Intel processor with a TCT DP1080P60 emulator attached to the DisplayPort connector.

Expected results

The kernel should detect monitor on the DisplayPort connector.

Actual results

No monitor is detected.