Dual DP LG ultrafine 5k display sync issues

[kansas.manjar0]

Is it possible KDE see two displays as a unified one?
The new kernel 5.91 enables 5k resolution that’s for each display you have 2560*2880 resolution.

But KDE still see this two as separated displays. In the following screen shot you can see that the following problems.

• 1. When expanding to full screen, app will expand to the left/ right, if it is in the left/right side.
• 3. The image in the center is broken, you will see double vision with 2 cm distance, but in the screenshot it is not broken(strange, what you got is not what you see).
• 4. the wall paper will not see the desktop as a unified one display, it only engages the primary one. You can see this when you change wallpaper.
• 5. The log out screen will appear on both left and right. However the log in screen see the two as one.

Will add pic later because I am not allowed to attach pic or link as new user.

[megavolt]

The magic extension for xorg is xinerama.
https://wiki.archlinux.org/index.php/multihead#Xinerama

Here is simple gui:
https://openapplibrary.org/project/wideguy

[Fabby]

@kansas.manjar0

Will add pic later because I am not allowed to attach pic or link as new user.

Yes you are:

[HowTo] post screenshots and links

Difficulty: ★☆☆☆☆ You’ve probably been sent here by a more experienced user because you cannot post links nor screenshots so please follow the simple instructions of this tutorial below to allow you to post both screenshots and links in any post and have a short explanation of why you can’t do this easily… If you’re reading this in response to a question, please click the green link above this text to bring you to the full unabridged text of the tutorial itself. If you …

[Fabby]

Thank you for your thank you, so I’ve marked the below answer as the solution to your question as it is by far the best answer you’ll get.

Dual DP LG ultrafine 5k display sync issues

The magic extension for xorg is xinerama. https://wiki.archlinux.org/index.php/multihead#Xinerama Here is simple gui: https://openapplibrary.org/project/wideguy

However, if you disagree with my choice, please feel free to take any other answer as the solution to your question or even remove the solution altogether: You are in control! (I just want to avoid even more subjective opinions being posted and confusing you even more)

P.S. In the future, please mark a solution like this:

so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.