Display problem on Intel ADL-M(QYLB)

[LHuan1]

We've designed DDI-A for DP, DDI-B for eDP on ADL-M(QYLB) platform. The problem is that it can't display normally. Only open DDI-A controller,the DP can display and if open DDI-A and DDI-B in the same time, the eDP and DP can't display.

[AndrewG_Intel]

Hello @LHuan1

Thank you for posting on the Intel® communities.

In order to review this and provide you with the most accurate details, could you please confirm the following to make sure we have the correct information?

1- Are you designing or building a custom system or project using Intel® components? If yes, could you please elaborate more on the project details?

2- When you say "ADL-M(QYLB)", do you mean Alder Lake platforms? Please provide more details about the hardware that you are using? Do you have details about the processor(s) model(s) that you are working with?

3- What do you mean by "DDI-A/B". Is it "Device ID" or what does it stand for?

4- Please elaborate more on the issue that you are experiencing with display:

Best regards,

Andrew G.

Intel Customer Support Technician

[AndrewG_Intel]

Hello LHuan1

We are checking this thread and we would like to know if you need further assistance. Please do not hesitate to contact us back if you have additional inquiries.

Best regards,

Andrew G.

Intel Customer Support Technician

[AndrewG_Intel]

Hello LHuan1

We have not heard back from you so we will proceed to close this thread now. If you need any additional information, please submit a new question as this thread will no longer be monitored.

Best regards,

Andrew G.

Intel Customer Support Technician