Galaxy Book4 Edge Stopped Sending Video to External USB-C Monitor

[Members_hSda8Cm]

Hello everyone,

I'm writing to report an issue that has suddenly appeared with my Samsung Galaxy Book4 Edge (16" / NP960XMB) and my external monitor, and to seek a solution.

Summary: My portable monitor, an LG Gram +view which gets both power and video through a single USB-C cable, worked perfectly with my Galaxy Book4 Edge for several weeks. About 4 days ago, it stopped working. Now, when I connect the monitor, it receives power (the power indicator light turns on), but it gets no video signal and the laptop does not detect any external display.

I have performed the following tests without success:

1. Monitor and Cable Confirmation: I have connected the LG monitor and the exact same cable to another (non-Samsung) laptop, and they work perfectly. 

2. Port Testing: I have tested the connection on both USB-C ports of my Galaxy Book4 Edge, with the same negative result on both.

3. Software Updates: I have searched for and installed all available updates through Windows Update

4. Samsung Updates: I have used the Samsung Update application to ensure everything is up to date

5. Manual Detection: I have tried to force display detection in Windows settings (Settings > System > Display > Detect) with no result.

Given that this setup was working perfectly and suddenly stopped, I suspect that the problem may have been introduced by a recent software or firmware update, causing a compatibility bug or a regression.

I would like to know if the Samsung support team is aware of this type of issue on the Book4 Edge. Is there a temporary workaround, or is a patch planned for a future firmware/driver update?

Thank you in advance for any help or information you can provide.

Best regards.

[LegendCoder]

It happened after a BIOS update from Samsung. I also posted other issues here https://r1.community.samsung.com/t5/galaxy-books/battery-not-detected-on-galaxy-book4-edge-16-quot-a...

[Helenna]

Hi,

Thanks for the detailed info. Since the monitor powers on but no video is detected, this may be due to a recent driver or firmware issue.

Please report it via Samsung Members > Support > Error reports so the team can investigate. We’ll also share your feedback internally. Appreciate you bringing this to our attention!

Ask ChatGP