[DS-U4B1][EVT1]No image output from DP Port after sleep/wake-up.

Community Apple Developers
Carrie_Wang OP
Created 5d
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Problem Description When the Type-C port is connected to an ASUS ROG Swift OLED PG32UCDM monitor set to 3840×2160 @ 120 Hz, and the DP port is connected to a Samsung U28E590D monitor set to 3840×2160 @ 60 Hz, the DP port shows no response and no video output after the system wakes from sleep. The DP monitor is not detected. Reproduction Steps Apple MacBook Pro (14-inch ,2024) connect the DP port to Samsung U28E590D and set the resolution to 3840×2160 @ 60 Hz. Connect the Type-C port to ASUS ROG Swift OLED PG32UCDM and set the resolution to 3840×2160 @ 120 Hz. Put the platform into sleep mode, then wake it up. After wake-up, the DP port has no response and no video output. Bug Description

  • When the Type-C port is connected to an ASUS ROG Swift OLED PG32UCDM at 3840×2160 @ 120 Hz, and the DP port is connected to a Samsung U28E590D at 3840×2160 @ 60 Hz, the DP port fails to output video after system sleep and wake-up, and the monitor is not detected.
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DTS Engineer OP
Apple
4d

Our engineering teams need to investigate this issue, as resolution may involve changes to Apple's software. Please file a bug report, include a small Xcode project and some directions that can be used to reproduce the problem, and post the Feedback number here once you do. If you post the Feedback number here I'll check the status next time I do a sweep of forums posts where I've suggested bug reports.

Bug Reporting: How and Why? has tips on creating your bug report.

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[DS-U4B1][EVT1]No image output from DP Port after sleep/wake-up.
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