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BIOS 422 - External USB-C Monitor Not Detected After Reboot or Sleep

Opti
Level 7

Hi everyone,

I’m running into an issue with my ASUS FA617NT laptop (Windows 11, BIOS 422 from 01/22/2025) where my external monitor connected via USB-C is not detected after a reboot or sleep.

Symptoms:

  • The USB-C monitor won’t display anything after restarting or waking the laptop.

  • I do hear the USB connect/disconnect sounds when I toggle the monitor power.

  • The only way to get the display back is to unplug and replug the USB-C cable manually.

  • This has been happening since updating to BIOS 422.

What I’ve tried:

  • Disabled Fast Startup, Hibernation, and USB selective suspend.

  • Changed GPU mode in Armoury Crate from “Ultimate” to “Standard” and “Optimized”.

  • Disabled Panel Overdrive, Power Mode Sync, and Modern Standby Assistant.

  • Updated AMD Adrenalin software and verified display settings.

  • Added a startup script to reinitialize the display — no effect.

  • Using a proper USB-C to DisplayPort cable that supports video.

  • Monitor firmware is up to date.

I’ve searched the forums and seen a few others reporting the same issue, but so far I haven’t found any confirmed fixes or workarounds.

Has ASUS acknowledged this bug?
Is there any upcoming BIOS or EC firmware patch to address this issue?
Or is there a safe way to roll back to a previous BIOS version that didn’t have this problem?

Thanks for any help or confirmation.

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