Widescreen monitor resolution can only be set at 1080p issue

I have a widescreen monitor. When I connect my thinkpad yoga with windows 10 to it, it recognizes the widescreen 2560 (or whatever it is) by 1080 as an option I can select for resolution. The thinkpad yoga was originally windows 8 and the resolution worked then and continued to work after I upgraded to windows 10.

I have a lenovo t550 laptop which originally had windows 7. When it had windows 7, when I connected that same ultrawide monitor, it could only recognize 1920 by 1080 resolutions (or lower) and did not even list the widescreen resolution as an option. I upgraded to windows 10 thinking that would fix it. It did not- when I plug it in, still the best resolution I can get is 1920 by 1080p which looks pixelated and wide/fat on an ultrawide screen obviously.

**What should I do? Are there drivers or something I can install on my t550 laptop to fix this ?

This is the ultrawide monitor I used but sadly I was foolish when selecting which buyer on amazon to buy from and its menu options are in Korean and I can't read it
https://www.amazon.com/LG-29UM68-P-...72370862&sr=8-1&keywords=lg+ultrawide+monitor

 

Are you setting the laptop and tablet to single screen mode, or clone mode?

If clone (you can see you desktop on both screens at the same time), then set it to only output on the external monitor.

Try the Windows key + P on the keyboard, to cycle through the output modes.

 

I'm not using the tablet. I only mentioned it as an illlustration.

I'm really trying to fix the t550 laptop

I don't see clone or single screen modes. However, in windows 10 there are "duplicate" and "extend" modes which are what they sound like.

Duplicate obviously leads to stretched appearances on a widescreen monitor for 1080p

What's confusing me is that for extend, I cannot even set the widescreen monitor to its widescreen resolution. I can only set it to 1080p which results in fat viewing

And I don't have this problem with other laptops and I think it may have something to do with the fact that the t550 was once, a long time ago, a windows 7 device before I upgraded to windows 7

Makes sense?

 

That is strange. This is what I see when I press Win+P:
Windows 7


Windows 10


Do you not see the "second screen only" option in Windows 10?
If not, might need to reinstall the video drivers.

Intel Driver: https://download.lenovo.com/pccbbs/mobiles/n10dt14w.exe
Nvidia Driver: https://download.lenovo.com/pccbbs/mobiles/n11dp32w.exe
Monitor INF file: https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/groi12ww.exe

Those are located on Lenovo's Driver download page HERE

 

Any update on this issue of yours?