cannot set resolution of monitor as needed

Question

I have a surface book 2 with a surface dock running
Windows 11. I have an Acer Nitro XZ342CK monitor 3440x1440

Monitor attached via usb c dock with hdmi converter to hdmi

It is suggesting a 3840x2160 but that is not correct. None of choices work with this 21:9 monitor.

How can I change the settings to utilize the 3840x1440 resolution?

Answer 1

I appreciate the confirmation, JodySmith. We highly encourage you to inform our Community by clicking on Yes or marking my post as an answer. This will help other members who may have the same issue as you.

Answer 2

Hi JodySmith,

Thank you for posting in Microsoft Community.

I understand that you'd like to use the monitor's maximum resolution. I appreciate the details provided.

Please perform the methods below:

• Try to lower the refresh rate and resolution on your monitors. Go to settings > System > click Display > Under Related Settings, click on Advanced display settings > look for Choose a refresh rate then use the drop down.
• Try to extend the display then change the resolution. Go to settings > system > look for Multiple Displays > choose Extended display.
• Run the Surface Diagnostic Toolkit and check the settings for new Windows Update.
• Run the System File Checker.
• Unplug the monitor for 15 – 30 seconds to allow the monitor to reset itself then reconnect everything.
• Clear your display cache.

1. Undock your Surface from the Surface Dock or disconnect the monitor from your Surface.
2. Download the Surface Dock registry file. Choose to Open the file. This file will clear your cache, whether you have a dock or not.
3. Select and run surface dock registry.reg.
4. Select Yes to allow changes to your Surface, select Yes to confirm, and then select OK to close.
5. Restart your Surface, reconnect the Dock and/or monitors, and try your external display again.

• Update your Surface Dock.
• Install the drivers package manually.
• Check the specific OS build of your Windows Settings> System> About.
• Download the driver and firmware for Surface, choose Surface Book 2 and click download on the next page.
• Please choose the .msi file that matches your current OS Build and click Next.
• After the download, runand installthe .msi then Restart the Surface Device

Let me know how this goes.

Answer 3

Hi JodySmith, We have noticed that you have not responded to our last message. We would like to know whether the issue you have raised with us is still ongoing?

Answer 4

It is resolved. It was simpler than I thought. After hooking everything up, I just had to unplug the pc from the dock and reconnect it. Weird but it worked.

Thank you