Samsung S25+ Portable monitor USB-C does't work

[Members_v8xg03W]

In the summer I sometimes work outside on my phone or Tablet with an external monitor.
My S22 Ultra powers and gives video with 1 USB-C cable.
Now I have the S25 Ultra and it doesn't work without an external power source for the screen.

How can I fix this? 
Already bought 3 USB-C cables to be sure. Now connected my S22 Ultra again and it works perfectly. 

[Patrick]

Hello,

Do you use Samsungs Multiport Adapter?

https://www.samsung.com/nl/computer-accessories/adapter/mpa-ee-p5400usegeu/?srsltid=AfmBOoq5tQg-kh0b...

[Members_v8xg03W]

No this wasn't necessary for the S22 Ultra. Just had to plug in USB-C and it gave power and video. 

Now with S25 Ultra the screen will power but no video. I read more complaints on other fora about this issue. It worked in the past on S22 and Tab S9+ series.

Seems Samsung doesn't solve it. Really a pitty as this was one of the features to choose for Samsung S series and Tab S.

Have to renew my Tab S9+ 5G this summer. Not sure if this will be Samsung as this problem is also in the newest Tab serie.

[Ajay-A · Accepted solution]

Hello @Members_v8xg03W,

Thank you for your post about this. I will help your further. Via the Samsung Members-app you can also send in an error report to my colleagues of the R&D department. They can investigate this and when this can be resolved by an update this will be rolled out as soon as possible. 

You can let us know if submitting the report worked.

With kind regards,

Ajay